### Re: Equation Array

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

IG



### Re: Equation Array

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj=1   for all i,j in P, ij (3)
Xi,Xj in {0,1}for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:
Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

IG



### Re: Equation Array


Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj=1   for all i,j in P, ij (3)
Xi,Xj in {0,1}for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array
(separate number on each line), while Alt-m Shift-n toggles numbering of
just the line the cursor occupies.

BTW, I too write integer programs.  A while back I came across a
reference to an article (Avoid eqnarray! by Lars Madsen, The PracTeX
Journal #4, 2006) that claims that eqnarray is somehow evil.  The
complaints are mainly about spacing (including the possibility that
equation numbers are overwritten or crowded off the line).  He
recommends AMS math environments or the mathenv package.  Then again, I
came across a post on sci.op-research that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=2x_{1}+3x_{2}+
4x_{3}\\
\text{subject to: }  44x_{1}+50x_{3}
\ge900\\

\llap{\ensuremath{x_{1},x_{2},x_{3}}}  \ge0

\end{alignat*}

FWIW,
Paul



### Re: Equation Array

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned. I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?
-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubinru...@msu.edu wrote:
Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z                                          (1)
Subject to:
Z=sum(Xi)                                             (2)
Xi+Xj=1                       for all i,j in P, ij (3)
Xi,Xj in {0,1}                        for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array (separate
number on each line), while Alt-m Shift-n toggles numbering of just the line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a reference
to an article (Avoid eqnarray! by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math environments
or the mathenv package.  Then again, I came across a post on sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=    2x_{1}    +    3x_{2}    +    4x_{3}\\
\text{subject to: }      44x_{1}            +    50x_{3}
\ge900\\
\llap{\ensuremath{x_{1},x_{2},x_{3}}}
\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array


Julio,

Julio Rojas wrote:

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned.

In the alignat* example?  Shouldn't be -- the alignment alternates
right-left-right, so the first and third columns should have the same
alignment.  Note that the first column is intentionally left empty, so
that the 'maximize' and 'subject to' are in the second column (and hence
left-aligned).

I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?

I'm not sure there's a generally accepted standard.  I like to put the
keywords (maximize, s.t.) in one column, the objective function and LHS
of constraints in a second column, the constraint direction (=,,) in a
third column, the RHS in the fourth column and any indexing stuff in a
fifth column, so I usually use eqnarray (critics be damned).  If I'm
going to use alignat, then I'll put max/s.t. in column 2 (left aligned),
the LHS _and_ =// in the third column (right aligned), the RHS in the
fourth column (left aligned) and indexing in the fifth column (right
aligned), which should work pretty well (it avoids gratuitous space in
the middle of the constraints).

I guess it's a matter of taste (unless the constraints get long enough
that eqnarray sends the equation numbers into another galaxy).

/Paul

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubinru...@msu.edu wrote:

Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj=1   for all i,j in P, ij (3)
Xi,Xj in {0,1}for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array (separate
number on each line), while Alt-m Shift-n toggles numbering of just the line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a reference
to an article (Avoid eqnarray! by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math environments
or the mathenv package.  Then again, I came across a post on sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=2x_{1}+3x_{2}+4x_{3}\\
\text{subject to: }  44x_{1}+50x_{3}
\ge900\\
\llap{\ensuremath{x_{1},x_{2},x_{3}}}
\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array

I made it with eqarray, but it only allows me to have 3 columns. How

I tried using alignat and it works ok, except for the fact that LyX
doesn't show proper alignment (only the first column is right aligned,
while all of the others are left aligned.

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 6:00 PM, Paul A. Rubinru...@msu.edu wrote:
Julio,

Julio Rojas wrote:

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned.

In the alignat* example?  Shouldn't be -- the alignment alternates
right-left-right, so the first and third columns should have the same
alignment.  Note that the first column is intentionally left empty, so that
the 'maximize' and 'subject to' are in the second column (and hence
left-aligned).

I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?

I'm not sure there's a generally accepted standard.  I like to put the
keywords (maximize, s.t.) in one column, the objective function and LHS of
constraints in a second column, the constraint direction (=,,) in a  third
column, the RHS in the fourth column and any indexing stuff in a fifth
column, so I usually use eqnarray (critics be damned).  If I'm going to use
alignat, then I'll put max/s.t. in column 2 (left aligned), the LHS _and_
=// in the third column (right aligned), the RHS in the fourth column
(left aligned) and indexing in the fifth column (right aligned), which
should work pretty well (it avoids gratuitous space in the middle of the
constraints).

I guess it's a matter of taste (unless the constraints get long enough that
eqnarray sends the equation numbers into another galaxy).

/Paul

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubinru...@msu.edu wrote:

Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z                                          (1)
Subject to:
Z=sum(Xi)                                             (2)
Xi+Xj=1                       for all i,j in P, ij (3)
Xi,Xj in {0,1}                        for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array
(separate
number on each line), while Alt-m Shift-n toggles numbering of just the
line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a
reference
to an article (Avoid eqnarray! by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are
mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math
environments
or the mathenv package.  Then again, I came across a post on
sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=    2x_{1}    +    3x_{2}    +
4x_{3}\\
\text{subject to: }      44x_{1}            +    50x_{3}
\ge900\\
\llap{\ensuremath{x_{1},x_{2},x_{3}}}

\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array


Julio Rojas wrote:

I made it with eqarray, but it only allows me to have 3 columns. How

Oops -- forgot about that.  I'm not very consistent in what I use (I
just went back and loaded some old papers to look).  Sometimes I use
eqnarray (which is locked into three columns), in which case I put
maximize and subject to in the left column, indexing in the right
column and everything else in the middle.  Most times I create a display
equation, then create an array with five columns, and go from there.  I
think I've used alignat once or twice.  Seems to me there's some
objection to using a plain old array, I think maybe relating to vertical
space (not sure), but I'm not much concerned with aesthetics, and array
is for me the easiest route.

I tried using alignat and it works ok, except for the fact that LyX
doesn't show proper alignment (only the first column is right aligned,
while all of the others are left aligned.

But it comes out right in the DVI/PDF output, which is all I worry about.

My pleasure,
Paul



### Re: Equation Array

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

IG



### Re: Equation Array

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj=1   for all i,j in P, ij (3)
Xi,Xj in {0,1}for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:
Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

IG



### Re: Equation Array


Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj=1   for all i,j in P, ij (3)
Xi,Xj in {0,1}for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array
(separate number on each line), while Alt-m Shift-n toggles numbering of
just the line the cursor occupies.

BTW, I too write integer programs.  A while back I came across a
reference to an article (Avoid eqnarray! by Lars Madsen, The PracTeX
Journal #4, 2006) that claims that eqnarray is somehow evil.  The
complaints are mainly about spacing (including the possibility that
equation numbers are overwritten or crowded off the line).  He
recommends AMS math environments or the mathenv package.  Then again, I
came across a post on sci.op-research that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=2x_{1}+3x_{2}+
4x_{3}\\
\text{subject to: }  44x_{1}+50x_{3}
\ge900\\

\llap{\ensuremath{x_{1},x_{2},x_{3}}}  \ge0

\end{alignat*}

FWIW,
Paul



### Re: Equation Array

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned. I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?
-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubinru...@msu.edu wrote:
Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z                                          (1)
Subject to:
Z=sum(Xi)                                             (2)
Xi+Xj=1                       for all i,j in P, ij (3)
Xi,Xj in {0,1}                        for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array (separate
number on each line), while Alt-m Shift-n toggles numbering of just the line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a reference
to an article (Avoid eqnarray! by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math environments
or the mathenv package.  Then again, I came across a post on sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=    2x_{1}    +    3x_{2}    +    4x_{3}\\
\text{subject to: }      44x_{1}            +    50x_{3}
\ge900\\
\llap{\ensuremath{x_{1},x_{2},x_{3}}}
\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array


Julio,

Julio Rojas wrote:

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned.

In the alignat* example?  Shouldn't be -- the alignment alternates
right-left-right, so the first and third columns should have the same
alignment.  Note that the first column is intentionally left empty, so
that the 'maximize' and 'subject to' are in the second column (and hence
left-aligned).

I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?

I'm not sure there's a generally accepted standard.  I like to put the
keywords (maximize, s.t.) in one column, the objective function and LHS
of constraints in a second column, the constraint direction (=,,) in a
third column, the RHS in the fourth column and any indexing stuff in a
fifth column, so I usually use eqnarray (critics be damned).  If I'm
going to use alignat, then I'll put max/s.t. in column 2 (left aligned),
the LHS _and_ =// in the third column (right aligned), the RHS in the
fourth column (left aligned) and indexing in the fifth column (right
aligned), which should work pretty well (it avoids gratuitous space in
the middle of the constraints).

I guess it's a matter of taste (unless the constraints get long enough
that eqnarray sends the equation numbers into another galaxy).

/Paul

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubinru...@msu.edu wrote:

Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj=1   for all i,j in P, ij (3)
Xi,Xj in {0,1}for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array (separate
number on each line), while Alt-m Shift-n toggles numbering of just the line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a reference
to an article (Avoid eqnarray! by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math environments
or the mathenv package.  Then again, I came across a post on sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=2x_{1}+3x_{2}+4x_{3}\\
\text{subject to: }  44x_{1}+50x_{3}
\ge900\\
\llap{\ensuremath{x_{1},x_{2},x_{3}}}
\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array

I made it with eqarray, but it only allows me to have 3 columns. How

I tried using alignat and it works ok, except for the fact that LyX
doesn't show proper alignment (only the first column is right aligned,
while all of the others are left aligned.

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 6:00 PM, Paul A. Rubinru...@msu.edu wrote:
Julio,

Julio Rojas wrote:

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned.

In the alignat* example?  Shouldn't be -- the alignment alternates
right-left-right, so the first and third columns should have the same
alignment.  Note that the first column is intentionally left empty, so that
the 'maximize' and 'subject to' are in the second column (and hence
left-aligned).

I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?

I'm not sure there's a generally accepted standard.  I like to put the
keywords (maximize, s.t.) in one column, the objective function and LHS of
constraints in a second column, the constraint direction (=,,) in a  third
column, the RHS in the fourth column and any indexing stuff in a fifth
column, so I usually use eqnarray (critics be damned).  If I'm going to use
alignat, then I'll put max/s.t. in column 2 (left aligned), the LHS _and_
=// in the third column (right aligned), the RHS in the fourth column
(left aligned) and indexing in the fifth column (right aligned), which
should work pretty well (it avoids gratuitous space in the middle of the
constraints).

I guess it's a matter of taste (unless the constraints get long enough that
eqnarray sends the equation numbers into another galaxy).

/Paul

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubinru...@msu.edu wrote:

Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z                                          (1)
Subject to:
Z=sum(Xi)                                             (2)
Xi+Xj=1                       for all i,j in P, ij (3)
Xi,Xj in {0,1}                        for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García ignacio.gmora...@gmail.com:

Julio Rojas jcredbe...@... writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at HelpMath (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array
(separate
number on each line), while Alt-m Shift-n toggles numbering of just the
line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a
reference
to an article (Avoid eqnarray! by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are
mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math
environments
or the mathenv package.  Then again, I came across a post on
sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
\text{maximize }  z=    2x_{1}    +    3x_{2}    +
4x_{3}\\
\text{subject to: }      44x_{1}            +    50x_{3}
\ge900\\
\llap{\ensuremath{x_{1},x_{2},x_{3}}}

\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array


Julio Rojas wrote:

I made it with eqarray, but it only allows me to have 3 columns. How

Oops -- forgot about that.  I'm not very consistent in what I use (I
just went back and loaded some old papers to look).  Sometimes I use
eqnarray (which is locked into three columns), in which case I put
maximize and subject to in the left column, indexing in the right
column and everything else in the middle.  Most times I create a display
equation, then create an array with five columns, and go from there.  I
think I've used alignat once or twice.  Seems to me there's some
objection to using a plain old array, I think maybe relating to vertical
space (not sure), but I'm not much concerned with aesthetics, and array
is for me the easiest route.

I tried using alignat and it works ok, except for the fact that LyX
doesn't show proper alignment (only the first column is right aligned,
while all of the others are left aligned.

But it comes out right in the DVI/PDF output, which is all I worry about.

My pleasure,
Paul



### Re: Equation Array

Julio Rojas  writes:

>
> Dear all, is there a way to individually label some equations of an
> equation array? Or some rows from an array?
> -
> Julio Rojas
> jcredbe...@...
>

Please have a look at Help>Math (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

IG



### Re: Equation Array

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj<=1   for all i,j in P, i:
> Julio Rojas  writes:
>
>>
>> Dear all, is there a way to individually label some equations of an
>> equation array? Or some rows from an array?
>> -
>> Julio Rojas
>> jcredbe...@...
>>
>
> Please have a look at Help>Math (or Ecuaciones) where you can
> find a very fine description of this issue in the section 19,
> 19.3 and/or 19.4.
>
> IG
>
>
>
>
>
>



### Re: Equation Array


Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj<=1   for all i,j in P, i:

Julio Rojas  writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at Help>Math (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array
(separate number on each line), while Alt-m Shift-n toggles numbering of
just the line the cursor occupies.

BTW, I too write integer programs.  A while back I came across a
reference to an article ("Avoid eqnarray!" by Lars Madsen, The PracTeX
Journal #4, 2006) that claims that eqnarray is somehow evil.  The
complaints are mainly about spacing (including the possibility that
equation numbers are overwritten or crowded off the line).  He
recommends AMS math environments or the mathenv package.  Then again, I
came across a post on sci.op-research that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
& \text{maximize } & z= &  & 2x_{1} &  & + &  & 3x_{2} &  & + &  &
4x_{3}\\
& \text{subject to: } &  &  & 44x_{1} &  &  &  &  &  & + &  & 50x_{3}
& \ge900\\
&  &  &  &  &  &  &  &  &  &  &  &
\llap{\ensuremath{x_{1},x_{2},x_{3}}} & \ge0

\end{alignat*}

FWIW,
Paul



### Re: Equation Array

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned. I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?
-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubin wrote:
> Julio Rojas wrote:
>>
>> Thanks, I've already done that, but no option seems to be of help. I'm
>> trying to put an integer programing model and every restriction should
>> be numbered and aligned like:
>>
>> Maximize Z                                          (1)
>> Subject to:
>> Z=sum(Xi)                                             (2)
>> Xi+Xj<=1                       for all i,j in P, i> Xi,Xj in {0,1}                        for all i,j in P (4)
>>
>> So, some rows are numbered, the left column is left aligned and the
>> right column is right aligned. How can this numbered array be done?
>> -
>> Julio Rojas
>> jcredbe...@gmail.com
>>
>>
>>
>> 2009/9/2 Ignacio García :
>>>
>>> Julio Rojas  writes:
>>>
Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

>>> Please have a look at Help>Math (or Ecuaciones) where you can
>>> find a very fine description of this issue in the section 19,
>>> 19.3 and/or 19.4.
>>>
>
> Julio,
>
> Actually, I think what you want is in section 19.1.  Inside an equation
> array environment, Alt-m n toggles numbering of the entire array (separate
> number on each line), while Alt-m Shift-n toggles numbering of just the line
> the cursor occupies.
>
> BTW, I too write integer programs.  A while back I came across a reference
> to an article ("Avoid eqnarray!" by Lars Madsen, The PracTeX Journal #4,
> 2006) that claims that eqnarray is somehow evil.  The complaints are mainly
> about spacing (including the possibility that equation numbers are
> overwritten or crowded off the line).  He recommends AMS math environments
> or the mathenv package.  Then again, I came across a post on sci.op-research
> that as I recall advocated eqnarray.
>
> Anyway, here's an alternative I found somewhere:
>
> \begin{alignat*}{7}
>  & \text{maximize } & z= &  & 2x_{1} &  & + &  & 3x_{2} &  & + &  & 4x_{3}\\
>  & \text{subject to: } &  &  & 44x_{1} &  &  &  &  &  & + &  & 50x_{3} &
> \ge900\\
>  &  &  &  &  &  &  &  &  &  &  &  & \llap{\ensuremath{x_{1},x_{2},x_{3}}} &
> \ge0
> \end{alignat*}
>
> FWIW,
> Paul
>
>



### Re: Equation Array


Julio,

Julio Rojas wrote:

Thanks Paul, I've tried it but the first column is right aligned and
the third is left aligned.

In the alignat* example?  Shouldn't be -- the alignment alternates
right-left-right, so the first and third columns should have the same
alignment.  Note that the first column is intentionally left empty, so
that the 'maximize' and 'subject to' are in the second column (and hence
left-aligned).

I'm kind of new on the subject and the
references I have from a friend make them left and right aligned,
respectively. Is there an standard way of aligning them?

I'm not sure there's a generally accepted standard.  I like to put the
keywords (maximize, s.t.) in one column, the objective function and LHS
of constraints in a second column, the constraint direction (=,<,>) in a
third column, the RHS in the fourth column and any indexing stuff in a
fifth column, so I usually use eqnarray (critics be damned).  If I'm
going to use alignat, then I'll put max/s.t. in column 2 (left aligned),
the LHS _and_ =/>/< in the third column (right aligned), the RHS in the
fourth column (left aligned) and indexing in the fifth column (right
aligned), which should work pretty well (it avoids gratuitous space in
the middle of the constraints).

I guess it's a matter of taste (unless the constraints get long enough
that eqnarray sends the equation numbers into another galaxy).

/Paul

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubin wrote:

Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z  (1)
Subject to:
Z=sum(Xi) (2)
Xi+Xj<=1   for all i,j in P, i:

Julio Rojas  writes:

Dear all, is there a way to individually label some equations of an
equation array? Or some rows from an array?
-
Julio Rojas
jcredbe...@...

Please have a look at Help>Math (or Ecuaciones) where you can
find a very fine description of this issue in the section 19,
19.3 and/or 19.4.

Julio,

Actually, I think what you want is in section 19.1.  Inside an equation
array environment, Alt-m n toggles numbering of the entire array (separate
number on each line), while Alt-m Shift-n toggles numbering of just the line
the cursor occupies.

BTW, I too write integer programs.  A while back I came across a reference
to an article ("Avoid eqnarray!" by Lars Madsen, The PracTeX Journal #4,
2006) that claims that eqnarray is somehow evil.  The complaints are mainly
about spacing (including the possibility that equation numbers are
overwritten or crowded off the line).  He recommends AMS math environments
or the mathenv package.  Then again, I came across a post on sci.op-research
that as I recall advocated eqnarray.

Anyway, here's an alternative I found somewhere:

\begin{alignat*}{7}
& \text{maximize } & z= &  & 2x_{1} &  & + &  & 3x_{2} &  & + &  & 4x_{3}\\
& \text{subject to: } &  &  & 44x_{1} &  &  &  &  &  & + &  & 50x_{3} &
\ge900\\
&  &  &  &  &  &  &  &  &  &  &  & \llap{\ensuremath{x_{1},x_{2},x_{3}}} &
\ge0
\end{alignat*}

FWIW,
Paul



### Re: Equation Array

I made it with eqarray, but it "only" allows me to have 3 columns. How

I tried using alignat and it works ok, except for the fact that LyX
doesn't show proper alignment (only the first column is right aligned,
while all of the others are left aligned.

-
Julio Rojas
jcredbe...@gmail.com

On Wed, Sep 2, 2009 at 6:00 PM, Paul A. Rubin wrote:
> Julio,
>
> Julio Rojas wrote:
>>
>> Thanks Paul, I've tried it but the first column is right aligned and
>> the third is left aligned.
>
> In the alignat* example?  Shouldn't be -- the alignment alternates
> right-left-right, so the first and third columns should have the same
> alignment.  Note that the first column is intentionally left empty, so that
> the 'maximize' and 'subject to' are in the second column (and hence
> left-aligned).
>
>> I'm kind of new on the subject and the
>> references I have from a friend make them left and right aligned,
>> respectively. Is there an standard way of aligning them?
>
> I'm not sure there's a generally accepted standard.  I like to put the
> keywords (maximize, s.t.) in one column, the objective function and LHS of
> constraints in a second column, the constraint direction (=,<,>) in a  third
> column, the RHS in the fourth column and any indexing stuff in a fifth
> column, so I usually use eqnarray (critics be damned).  If I'm going to use
> alignat, then I'll put max/s.t. in column 2 (left aligned), the LHS _and_
> =/>/< in the third column (right aligned), the RHS in the fourth column
> (left aligned) and indexing in the fifth column (right aligned), which
> should work pretty well (it avoids gratuitous space in the middle of the
> constraints).
>
> I guess it's a matter of taste (unless the constraints get long enough that
> eqnarray sends the equation numbers into another galaxy).
>
> /Paul
>
>> -
>> Julio Rojas
>> jcredbe...@gmail.com
>>
>>
>>
>> On Wed, Sep 2, 2009 at 5:11 PM, Paul A. Rubin wrote:
>>>
>>> Julio Rojas wrote:

Thanks, I've already done that, but no option seems to be of help. I'm
trying to put an integer programing model and every restriction should
be numbered and aligned like:

Maximize Z                                          (1)
Subject to:
Z=sum(Xi)                                             (2)
Xi+Xj<=1                       for all i,j in P, i>>> Xi,Xj in {0,1}                        for all i,j in P (4)

So, some rows are numbered, the left column is left aligned and the
right column is right aligned. How can this numbered array be done?
-
Julio Rojas
jcredbe...@gmail.com

2009/9/2 Ignacio García :
>
> Julio Rojas  writes:
>
>> Dear all, is there a way to individually label some equations of an
>> equation array? Or some rows from an array?
>> -
>> Julio Rojas
>> jcredbe...@...
>>
> Please have a look at Help>Math (or Ecuaciones) where you can
> find a very fine description of this issue in the section 19,
> 19.3 and/or 19.4.
>
>>> Julio,
>>>
>>> Actually, I think what you want is in section 19.1.  Inside an equation
>>> array environment, Alt-m n toggles numbering of the entire array
>>> (separate
>>> number on each line), while Alt-m Shift-n toggles numbering of just the
>>> line
>>> the cursor occupies.
>>>
>>> BTW, I too write integer programs.  A while back I came across a
>>> reference
>>> to an article ("Avoid eqnarray!" by Lars Madsen, The PracTeX Journal #4,
>>> 2006) that claims that eqnarray is somehow evil.  The complaints are
>>> mainly
>>> about spacing (including the possibility that equation numbers are
>>> overwritten or crowded off the line).  He recommends AMS math
>>> environments
>>> or the mathenv package.  Then again, I came across a post on
>>> sci.op-research
>>> that as I recall advocated eqnarray.
>>>
>>> Anyway, here's an alternative I found somewhere:
>>>
>>> \begin{alignat*}{7}
>>>  & \text{maximize } & z= &  & 2x_{1} &  & + &  & 3x_{2} &  & + &  &
>>> 4x_{3}\\
>>>  & \text{subject to: } &  &  & 44x_{1} &  &  &  &  &  & + &  & 50x_{3} &
>>> \ge900\\
>>>  &  &  &  &  &  &  &  &  &  &  &  & \llap{\ensuremath{x_{1},x_{2},x_{3}}}
>>> &
>>> \ge0
>>> \end{alignat*}
>>>
>>> FWIW,
>>> Paul
>>>
>>>
>>
>
>



### Re: Equation Array


Julio Rojas wrote:

I made it with eqarray, but it "only" allows me to have 3 columns. How

Oops -- forgot about that.  I'm not very consistent in what I use (I
just went back and loaded some old papers to look).  Sometimes I use
eqnarray (which is locked into three columns), in which case I put
"maximize" and "subject to" in the left column, indexing in the right
column and everything else in the middle.  Most times I create a display
equation, then create an array with five columns, and go from there.  I
think I've used alignat once or twice.  Seems to me there's some
objection to using a plain old array, I think maybe relating to vertical
space (not sure), but I'm not much concerned with aesthetics, and array
is for me the easiest route.

I tried using alignat and it works ok, except for the fact that LyX
doesn't show proper alignment (only the first column is right aligned,
while all of the others are left aligned.

But it comes out right in the DVI/PDF output, which is all I worry about.

My pleasure,
Paul



### Re: Equation array and two column layout

Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d = a + b, if a1 \nonumber \\
= a-b, if a1 \nonumber \\
=0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b \mbox{ if a1} \\ a-b \mbox{ if a1} \\ 0 \mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas [EMAIL PROTECTED] wrote:

Dear all, I'm finishing a paper with the two columned article class. I
have a problem with some equation arrays that are two big for this
format. They span over the other column or over the margins, even with
an smaller font (\scriptstyle). What can I do to solve this problem?
Should I use an even smaller font (\scriptscriptstyle)? How can I
break the line in an equation array and put the right hand of the
array under the first part, but slightly to the right?

The kind of equation array I'm using is conditional:

d= a+b, if a1
a-b, if a1
0,if a=1

Hope you can help me.
-
Julio Rojas
[EMAIL PROTECTED]

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Thank you Vittorio. What I would like with this matrix is that the
right column can overfill the left one and viceversa. That way I can
have the long equations and the cases in two lines (eq. on the left
column, cases on the right column) every other line.

d= a+b+c+d+e+f+g
if a,b,c,d,e,f,g 1
a-b-c-d-e-f-g
if a,b,c,d,e,f,g1

With this arrangement I can include the equations in just one column
of the two column paper. Is this something usual to do? What is the
regular way of handling the case of a series of long equations in
two columned papers?

-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 2:50 PM, Vittorio Zuccala'
[EMAIL PROTECTED] wrote:
Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d = a + b, if a1 \nonumber \\
= a-b, if a1 \nonumber \\
=0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b \mbox{ if a1} \\ a-b \mbox{ if a1} \\ 0 \mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas [EMAIL PROTECTED] wrote:

Dear all, I'm finishing a paper with the two columned article class. I
have a problem with some equation arrays that are two big for this
format. They span over the other column or over the margins, even with
an smaller font (\scriptstyle). What can I do to solve this problem?
Should I use an even smaller font (\scriptscriptstyle)? How can I
break the line in an equation array and put the right hand of the
array under the first part, but slightly to the right?

The kind of equation array I'm using is conditional:

d= a+b, if a1
a-b, if a1
0,if a=1

Hope you can help me.
-
Julio Rojas
[EMAIL PROTECTED]

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Thanks Vittorio, but this solution is not the one I'm looking for. I
would like the right column to be right aligned and the left column to
be left aligned. When I do that with your solution (changing the rl
to lr) this turns our to be the original matrix I started with. As I
said, I need the right column to overfill the left one in order to
make the equation fit inside one column of the document.

Anyways, thank you very much.
-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 4:48 PM, Vittorio Zuccala'
[EMAIL PROTECTED] wrote:
If you have to go to another line, you may use \\ in ERT
and you may use \: to have additional space.
In this way un can use in ERT mode:

$$d = \left\{ \begin{array}{rl} a+b+c+d+e+f+g \\ \: \mbox{ if a,b,c,d,e,f,g 1} \\ a-b-c-d-e-f-g \\ \: \mbox{ if a,b,c,d,e,f,g1} \\ 0 \mbox{ if a=1} \\ \: \end{array} \right.$$

I hope this will be usefull.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 4:18 PM, Julio Rojas [EMAIL PROTECTED] wrote:

Thank you Vittorio. What I would like with this matrix is that the
right column can overfill the left one and viceversa. That way I can
have the long equations and the cases in two lines (eq. on the left
column, cases on the right column) every other line.

d= a+b+c+d+e+f+g
if a,b,c,d,e,f,g 1
a-b-c-d-e-f-g
if a,b,c,d,e,f,g1

With this arrangement I can include the equations in just one column
of the two column paper. Is this something usual to do? What is the
regular way of handling the case of a series of long equations in
two columned papers?

-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 2:50 PM, Vittorio Zuccala'
[EMAIL PROTECTED] wrote:
Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d = a + b, if a1 \nonumber \\
= a-b, if a1 \nonumber \\
=0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b \mbox{ if a1} \\ a-b \mbox{ if a1} \\ 0 \mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas [EMAIL PROTECTED]
wrote:

Dear all, I'm finishing a paper with the two columned article class. I
have a problem with some equation arrays that are two big for this
format. They span over the other column or over the margins, even with
an smaller font (\scriptstyle). What can I do to solve this problem?
Should I use an even smaller font (\scriptscriptstyle)? How can I
break the line in an equation array and put the right hand of the
array under the first part, but slightly to the right?

The kind of equation array I'm using is conditional:

d= a+b, if a1
a-b, if a1
0,if a=1

Hope you can help me.
-
Julio Rojas
[EMAIL PROTECTED]

--
Vittorio Zuccalà

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d = a + b, if a1 \nonumber \\
= a-b, if a1 \nonumber \\
=0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b \mbox{ if a1} \\ a-b \mbox{ if a1} \\ 0 \mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas [EMAIL PROTECTED] wrote:

Dear all, I'm finishing a paper with the two columned article class. I
have a problem with some equation arrays that are two big for this
format. They span over the other column or over the margins, even with
an smaller font (\scriptstyle). What can I do to solve this problem?
Should I use an even smaller font (\scriptscriptstyle)? How can I
break the line in an equation array and put the right hand of the
array under the first part, but slightly to the right?

The kind of equation array I'm using is conditional:

d= a+b, if a1
a-b, if a1
0,if a=1

Hope you can help me.
-
Julio Rojas
[EMAIL PROTECTED]

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Thank you Vittorio. What I would like with this matrix is that the
right column can overfill the left one and viceversa. That way I can
have the long equations and the cases in two lines (eq. on the left
column, cases on the right column) every other line.

d= a+b+c+d+e+f+g
if a,b,c,d,e,f,g 1
a-b-c-d-e-f-g
if a,b,c,d,e,f,g1

With this arrangement I can include the equations in just one column
of the two column paper. Is this something usual to do? What is the
regular way of handling the case of a series of long equations in
two columned papers?

-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 2:50 PM, Vittorio Zuccala'
[EMAIL PROTECTED] wrote:
Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d = a + b, if a1 \nonumber \\
= a-b, if a1 \nonumber \\
=0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b \mbox{ if a1} \\ a-b \mbox{ if a1} \\ 0 \mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas [EMAIL PROTECTED] wrote:

Dear all, I'm finishing a paper with the two columned article class. I
have a problem with some equation arrays that are two big for this
format. They span over the other column or over the margins, even with
an smaller font (\scriptstyle). What can I do to solve this problem?
Should I use an even smaller font (\scriptscriptstyle)? How can I
break the line in an equation array and put the right hand of the
array under the first part, but slightly to the right?

The kind of equation array I'm using is conditional:

d= a+b, if a1
a-b, if a1
0,if a=1

Hope you can help me.
-
Julio Rojas
[EMAIL PROTECTED]

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Thanks Vittorio, but this solution is not the one I'm looking for. I
would like the right column to be right aligned and the left column to
be left aligned. When I do that with your solution (changing the rl
to lr) this turns our to be the original matrix I started with. As I
said, I need the right column to overfill the left one in order to
make the equation fit inside one column of the document.

Anyways, thank you very much.
-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 4:48 PM, Vittorio Zuccala'
[EMAIL PROTECTED] wrote:
If you have to go to another line, you may use \\ in ERT
and you may use \: to have additional space.
In this way un can use in ERT mode:

$$d = \left\{ \begin{array}{rl} a+b+c+d+e+f+g \\ \: \mbox{ if a,b,c,d,e,f,g 1} \\ a-b-c-d-e-f-g \\ \: \mbox{ if a,b,c,d,e,f,g1} \\ 0 \mbox{ if a=1} \\ \: \end{array} \right.$$

I hope this will be usefull.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 4:18 PM, Julio Rojas [EMAIL PROTECTED] wrote:

Thank you Vittorio. What I would like with this matrix is that the
right column can overfill the left one and viceversa. That way I can
have the long equations and the cases in two lines (eq. on the left
column, cases on the right column) every other line.

d= a+b+c+d+e+f+g
if a,b,c,d,e,f,g 1
a-b-c-d-e-f-g
if a,b,c,d,e,f,g1

With this arrangement I can include the equations in just one column
of the two column paper. Is this something usual to do? What is the
regular way of handling the case of a series of long equations in
two columned papers?

-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 2:50 PM, Vittorio Zuccala'
[EMAIL PROTECTED] wrote:
Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d = a + b, if a1 \nonumber \\
= a-b, if a1 \nonumber \\
=0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b \mbox{ if a1} \\ a-b \mbox{ if a1} \\ 0 \mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas [EMAIL PROTECTED]
wrote:

Dear all, I'm finishing a paper with the two columned article class. I
have a problem with some equation arrays that are two big for this
format. They span over the other column or over the margins, even with
an smaller font (\scriptstyle). What can I do to solve this problem?
Should I use an even smaller font (\scriptscriptstyle)? How can I
break the line in an equation array and put the right hand of the
array under the first part, but slightly to the right?

The kind of equation array I'm using is conditional:

d= a+b, if a1
a-b, if a1
0,if a=1

Hope you can help me.
-
Julio Rojas
[EMAIL PROTECTED]

--
Vittorio Zuccalà

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Hello Julio,
i do not know if i've understood your question.
Anyway, probably you can be interested one of this...

First solution:
press CTRL+L entering in ERT mode and then:
\begin{eqnarray}
d &=& a + b, if a>1 \nonumber \\
&=& a-b, if a<1 \nonumber \\
&=&0, if a=1 \nonumber
\end{eqnarray}

Second solution (i think better for you):
press CTRL+L entering in ERT mode and then:
$$d = \left\{ \begin{array}{rl} a+b &\mbox{ if a>1} \\ a-b &\mbox{ if a<1} \\ 0 &\mbox{ if a=1} \\ \end{array} \right.$$

I hope it'll be usefull for you.
Bye,
Vittorio

On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas <[EMAIL PROTECTED]> wrote:

> Dear all, I'm finishing a paper with the two columned article class. I
> have a problem with some equation arrays that are two big for this
> format. They span over the other column or over the margins, even with
> an smaller font (\scriptstyle). What can I do to solve this problem?
> Should I use an even smaller font (\scriptscriptstyle)? How can I
> break the line in an equation array and put the right hand of the
> array under the first part, but slightly to the right?
>
> The kind of equation array I'm using is conditional:
>
> d= a+b, if a>1
> a-b, if a<1
> 0,if a=1
>
> Hope you can help me.
> -
> Julio Rojas
> [EMAIL PROTECTED]
>

--
Vittorio Zuccalà



### Re: Equation array and two column layout

Thank you Vittorio. What I would like with this matrix is that the
right column can overfill the left one and viceversa. That way I can
have the long equations and the cases in two lines (eq. on the left
column, cases on the right column) every other line.

d= a+b+c+d+e+f+g
if a,b,c,d,e,f,g >1
a-b-c-d-e-f-g
if a,b,c,d,e,f,g<1

With this arrangement I can include the equations in just one column
of the two column paper. Is this something usual to do? What is the
"regular" way of handling the case of a series of long equations in
two columned papers?

-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 2:50 PM, Vittorio Zuccala'
<[EMAIL PROTECTED]> wrote:
> Hello Julio,
> i do not know if i've understood your question.
> Anyway, probably you can be interested one of this...
>
> First solution:
> press CTRL+L entering in ERT mode and then:
> \begin{eqnarray}
> d &=& a + b, if a>1 \nonumber \\
> &=& a-b, if a<1 \nonumber \\
> &=&0, if a=1 \nonumber
> \end{eqnarray}
>
> Second solution (i think better for you):
> press CTRL+L entering in ERT mode and then:
> $$d = \left\{ > \begin{array}{rl} a+b &\mbox{ if a>1} \\ > a-b &\mbox{ if a<1} \\ > 0 &\mbox{ if a=1} \\ > \end{array} > \right.$$
>
>
> I hope it'll be usefull for you.
> Bye,
>Vittorio
>
>
> On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas <[EMAIL PROTECTED]> wrote:
>>
>> Dear all, I'm finishing a paper with the two columned article class. I
>> have a problem with some equation arrays that are two big for this
>> format. They span over the other column or over the margins, even with
>> an smaller font (\scriptstyle). What can I do to solve this problem?
>> Should I use an even smaller font (\scriptscriptstyle)? How can I
>> break the line in an equation array and put the right hand of the
>> array under the first part, but slightly to the right?
>>
>> The kind of equation array I'm using is conditional:
>>
>> d= a+b, if a>1
>> a-b, if a<1
>> 0,if a=1
>>
>> Hope you can help me.
>> -
>> Julio Rojas
>> [EMAIL PROTECTED]
>
>
>
> --
> Vittorio Zuccalà
>



### Re: Equation array and two column layout

Thanks Vittorio, but this solution is not the one I'm looking for. I
would like the right column to be right aligned and the left column to
be left aligned. When I do that with your solution (changing the "rl"
to "lr") this turns our to be the original matrix I started with. As I
said, I need the right column to overfill the left one in order to
make the equation fit inside one column of the document.

Anyways, thank you very much.
-
Julio Rojas
[EMAIL PROTECTED]

On Tue, Nov 25, 2008 at 4:48 PM, Vittorio Zuccala'
<[EMAIL PROTECTED]> wrote:
> If you have to go to another line, you may use \\ in ERT
> and you may use \: to have additional space.
> In this way un can use in ERT mode:
>
> $$d = \left\{ > \begin{array}{rl} > a+b+c+d+e+f+g &\\ \: \mbox{ if a,b,c,d,e,f,g >1} \\ > a-b-c-d-e-f-g &\\ \: \mbox{ if a,b,c,d,e,f,g<1} \\ > 0 &\mbox{ if a=1} \\ \: \end{array} > \right.$$
>
> I hope this will be usefull.
> Bye,
> Vittorio
>
>
> On Tue, Nov 25, 2008 at 4:18 PM, Julio Rojas <[EMAIL PROTECTED]> wrote:
>>
>> Thank you Vittorio. What I would like with this matrix is that the
>> right column can overfill the left one and viceversa. That way I can
>> have the long equations and the cases in two lines (eq. on the left
>> column, cases on the right column) every other line.
>>
>> d= a+b+c+d+e+f+g
>>if a,b,c,d,e,f,g >1
>> a-b-c-d-e-f-g
>>if a,b,c,d,e,f,g<1
>>
>> With this arrangement I can include the equations in just one column
>> of the two column paper. Is this something usual to do? What is the
>> "regular" way of handling the case of a series of long equations in
>> two columned papers?
>>
>> -
>> Julio Rojas
>> [EMAIL PROTECTED]
>>
>>
>>
>> On Tue, Nov 25, 2008 at 2:50 PM, Vittorio Zuccala'
>> <[EMAIL PROTECTED]> wrote:
>> > Hello Julio,
>> > i do not know if i've understood your question.
>> > Anyway, probably you can be interested one of this...
>> >
>> > First solution:
>> > press CTRL+L entering in ERT mode and then:
>> > \begin{eqnarray}
>> > d &=& a + b, if a>1 \nonumber \\
>> > &=& a-b, if a<1 \nonumber \\
>> > &=&0, if a=1 \nonumber
>> > \end{eqnarray}
>> >
>> > Second solution (i think better for you):
>> > press CTRL+L entering in ERT mode and then:
>> > $$d = \left\{ >> > \begin{array}{rl} a+b &\mbox{ if a>1} \\ >> > a-b &\mbox{ if a<1} \\ >> > 0 &\mbox{ if a=1} \\ >> > \end{array} >> > \right.$$
>> >
>> >
>> > I hope it'll be usefull for you.
>> > Bye,
>> >Vittorio
>> >
>> >
>> > On Tue, Nov 25, 2008 at 1:01 PM, Julio Rojas <[EMAIL PROTECTED]>
>> > wrote:
>> >>
>> >> Dear all, I'm finishing a paper with the two columned article class. I
>> >> have a problem with some equation arrays that are two big for this
>> >> format. They span over the other column or over the margins, even with
>> >> an smaller font (\scriptstyle). What can I do to solve this problem?
>> >> Should I use an even smaller font (\scriptscriptstyle)? How can I
>> >> break the line in an equation array and put the right hand of the
>> >> array under the first part, but slightly to the right?
>> >>
>> >> The kind of equation array I'm using is conditional:
>> >>
>> >> d= a+b, if a>1
>> >> a-b, if a<1
>> >> 0,if a=1
>> >>
>> >> Hope you can help me.
>> >> -
>> >> Julio Rojas
>> >> [EMAIL PROTECTED]
>> >
>> >
>> >
>> > --
>> > Vittorio Zuccalà
>> >
>
>
>
> --
> Vittorio Zuccalà
>



### Re: equation array and delimiter problem


On Sat, Aug 04, 2001 at 09:42:54PM +0200, Herbert Voss wrote:
Michael Koundouros wrote:

equation array was input using the equation array utility (Ctrl-enter)
matrix was input using a 2x3 matrix within a delimiter.

looking at the ps file you will see the equation in the matrix is rather
squashed. what I would like is the equation to look like in equation array
but to have the delimiter and numbering of the matrix equation.

Does anyone know how to do this as I was unable to insert a delimiter in
equation array.

there are different sizes, used by latex when you have equnarray or
array.

You cannot use the latex \displaystyle command because it confuses the lyx
parser (this will be fixed in 1.2.0), so you need to use an alias instead.
See the attached file.

\lyxformat 218
\textclass article
\begin_preamble
\usepackage{cite}
\usepackage{fancyhdr}
\renewcommand {\sectionmark}{\markright{#1}}

\let\dispstyle=\displaystyle
\end_preamble
\language british
\inputencoding auto
\fontscheme default
\graphics default
\float_placement !hbtp
\paperfontsize default
\spacing single
\papersize Default
\paperpackage widemarginsa4
\use_geometry 0
\use_amsmath 0
\paperorientation portrait
\secnumdepth 3
\tocdepth 3
\paragraph_separation skip
\defskip medskip
\quotes_language english
\quotes_times 2
\papercolumns 1
\papersides 1
\paperpagestyle fancy

\layout Standard

\begin_inset Formula \begin{eqnarray}
\varphi \left( z_{1}\right)   =  P\frac{-i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right)
}}\right] \\
\psi \left( z_{2}\right)   =  P\frac{+i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left( 1+s^{2}_{2}\right)
}}\right] \label{equation array}
\end{eqnarray}

\end_inset

\layout Standard

\begin_inset Formula \begin{equation}
\label{matrix}
\left. \begin{array}{ccc}
\varphi \left( z_{1}\right)   =  \dispstyle {P\frac{-i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left(
1+s^{2}_{1}\right) }}\right] }\\
\psi \left( z_{2}\right)   =  \dispstyle {P\frac{+i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left(
1+s^{2}_{2}\right) }}\right] }
\end{array}\right\}
\end{equation}

\end_inset

\the_end



### Re: equation array and delimiter problem


On Sat, Aug 04, 2001 at 09:42:54PM +0200, Herbert Voss wrote:
Michael Koundouros wrote:

equation array was input using the equation array utility (Ctrl-enter)
matrix was input using a 2x3 matrix within a delimiter.

looking at the ps file you will see the equation in the matrix is rather
squashed. what I would like is the equation to look like in equation array
but to have the delimiter and numbering of the matrix equation.

Does anyone know how to do this as I was unable to insert a delimiter in
equation array.

there are different sizes, used by latex when you have equnarray or
array.

You cannot use the latex \displaystyle command because it confuses the lyx
parser (this will be fixed in 1.2.0), so you need to use an alias instead.
See the attached file.

\lyxformat 218
\textclass article
\begin_preamble
\usepackage{cite}
\usepackage{fancyhdr}
\renewcommand {\sectionmark}{\markright{#1}}

\let\dispstyle=\displaystyle
\end_preamble
\language british
\inputencoding auto
\fontscheme default
\graphics default
\float_placement !hbtp
\paperfontsize default
\spacing single
\papersize Default
\paperpackage widemarginsa4
\use_geometry 0
\use_amsmath 0
\paperorientation portrait
\secnumdepth 3
\tocdepth 3
\paragraph_separation skip
\defskip medskip
\quotes_language english
\quotes_times 2
\papercolumns 1
\papersides 1
\paperpagestyle fancy

\layout Standard

\begin_inset Formula \begin{eqnarray}
\varphi \left( z_{1}\right)   =  P\frac{-i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right)
}}\right] \\
\psi \left( z_{2}\right)   =  P\frac{+i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left( 1+s^{2}_{2}\right)
}}\right] \label{equation array}
\end{eqnarray}

\end_inset

\layout Standard

\begin_inset Formula \begin{equation}
\label{matrix}
\left. \begin{array}{ccc}
\varphi \left( z_{1}\right)   =  \dispstyle {P\frac{-i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left(
1+s^{2}_{1}\right) }}\right] }\\
\psi \left( z_{2}\right)   =  \dispstyle {P\frac{+i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left(
1+s^{2}_{2}\right) }}\right] }
\end{array}\right\}
\end{equation}

\end_inset

\the_end



### Re: equation array and delimiter problem


On Sat, Aug 04, 2001 at 09:42:54PM +0200, Herbert Voss wrote:
> Michael Koundouros wrote:
> >
> > "equation array" was input using the equation array utility (Ctrl-enter)
> > "matrix" was input using a 2x3 matrix within a delimiter.
> >
> > looking at the ps file you will see the equation in the matrix is rather
> > squashed. what I would like is the equation to look like in "equation array"
> > but to have the delimiter and numbering of the "matrix" equation.
> >
> > Does anyone know how to do this as I was unable to insert a delimiter in
> > "equation array".
>
> there are different sizes, used by latex when you have equnarray or
> array.

You cannot use the latex \displaystyle command because it confuses the lyx
parser (this will be fixed in 1.2.0), so you need to use an alias instead.
See the attached file.

\lyxformat 218
\textclass article
\begin_preamble
\usepackage{cite}
\usepackage{fancyhdr}
\renewcommand {\sectionmark}{\markright{#1}}

\let\dispstyle=\displaystyle
\end_preamble
\language british
\inputencoding auto
\fontscheme default
\graphics default
\float_placement !hbtp
\paperfontsize default
\spacing single
\papersize Default
\paperpackage widemarginsa4
\use_geometry 0
\use_amsmath 0
\paperorientation portrait
\secnumdepth 3
\tocdepth 3
\paragraph_separation skip
\defskip medskip
\quotes_language english
\quotes_times 2
\papercolumns 1
\papersides 1
\paperpagestyle fancy

\layout Standard

\begin_inset Formula \begin{eqnarray}
\varphi \left( z_{1}\right)  & = & P\frac{-i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right)
}}\right] \\
\psi \left( z_{2}\right)  & = & P\frac{+i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left( 1+s^{2}_{2}\right)
}}\right] \label{equation array}
\end{eqnarray}

\end_inset

\layout Standard

\begin_inset Formula \begin{equation}
\label{matrix}
\left. \begin{array}{ccc}
\varphi \left( z_{1}\right)  & = & \dispstyle {P\frac{-i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left(
1+s^{2}_{1}\right) }}\right] }\\
\psi \left( z_{2}\right)  & = & \dispstyle {P\frac{+i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left(
1+s^{2}_{2}\right) }}\right] }
\end{array}\right\}
\end{equation}

\end_inset

\the_end



### Re: equation array and delimiter problem


Michael Koundouros wrote:

equation array was input using the equation array utility (Ctrl-enter)
matrix was input using a 2x3 matrix within a delimiter.

looking at the ps file you will see the equation in the matrix is rather
squashed. what I would like is the equation to look like in equation array
but to have the delimiter and numbering of the matrix equation.

Does anyone know how to do this as I was unable to insert a delimiter in
equation array.

there are different sizes, used by latex when you have equnarray or
array.

Herbert

--
http://www.educat.hu-berlin.de/~voss/lyx/

\lyxformat 218
\textclass article
\begin_preamble
\usepackage{cite}
\usepackage{fancyhdr}
\renewcommand {\sectionmark}{\markright{#1}}
\end_preamble
\language british
\inputencoding auto
\fontscheme default
\graphics default
\float_placement !hbtp
\paperfontsize default
\spacing single
\papersize Default
\paperpackage widemarginsa4
\use_geometry 0
\use_amsmath 0
\paperorientation portrait
\secnumdepth 3
\tocdepth 3
\paragraph_separation skip
\defskip medskip
\quotes_language english
\quotes_times 2
\papercolumns 1
\papersides 1
\paperpagestyle fancy

\layout Standard

\begin_inset Formula \begin{eqnarray}
\varphi \left( z_{1}\right)   =  P\frac{-i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right)
}}\right] \\
\psi \left( z_{2}\right)   =  P\frac{+i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left( 1+s^{2}_{2}\right)
}}\right] \label{equation array}
\end{eqnarray}

\end_inset

\layout Standard

\begin_inset Formula \begin{equation}
\label{matrix}
\left. \begin{array}{ccc}
\varphi \left( z_{1}\right)   =  \displaystyle {P\frac{-i}{2\left(
s_{1}-s_{2}\right) \left( 1+is_{1}\right) }\left[
1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right) }}\right] }\\
\psi \left( z_{2}\right)   =  \displaystyle {P\frac{+i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left(
1+s^{2}_{2}\right) }}\right] }
\end{array}\right\}
\end{equation}

\end_inset

\the_end



### Re: equation array and delimiter problem


Michael Koundouros wrote:

equation array was input using the equation array utility (Ctrl-enter)
matrix was input using a 2x3 matrix within a delimiter.

looking at the ps file you will see the equation in the matrix is rather
squashed. what I would like is the equation to look like in equation array
but to have the delimiter and numbering of the matrix equation.

Does anyone know how to do this as I was unable to insert a delimiter in
equation array.

there are different sizes, used by latex when you have equnarray or
array.

Herbert

--
http://www.educat.hu-berlin.de/~voss/lyx/

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\layout Standard

\begin_inset Formula \begin{eqnarray}
\varphi \left( z_{1}\right)   =  P\frac{-i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right)
}}\right] \\
\psi \left( z_{2}\right)   =  P\frac{+i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left( 1+s^{2}_{2}\right)
}}\right] \label{equation array}
\end{eqnarray}

\end_inset

\layout Standard

\begin_inset Formula \begin{equation}
\label{matrix}
\left. \begin{array}{ccc}
\varphi \left( z_{1}\right)   =  \displaystyle {P\frac{-i}{2\left(
s_{1}-s_{2}\right) \left( 1+is_{1}\right) }\left[
1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right) }}\right] }\\
\psi \left( z_{2}\right)   =  \displaystyle {P\frac{+i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left(
1+s^{2}_{2}\right) }}\right] }
\end{array}\right\}
\end{equation}

\end_inset

\the_end



### Re: equation array and delimiter problem


Michael Koundouros wrote:
>
> "equation array" was input using the equation array utility (Ctrl-enter)
> "matrix" was input using a 2x3 matrix within a delimiter.
>
> looking at the ps file you will see the equation in the matrix is rather
> squashed. what I would like is the equation to look like in "equation array"
> but to have the delimiter and numbering of the "matrix" equation.
>
> Does anyone know how to do this as I was unable to insert a delimiter in
> "equation array".

there are different sizes, used by latex when you have equnarray or
array.

Herbert

--
http://www.educat.hu-berlin.de/~voss/lyx/

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\layout Standard

\begin_inset Formula \begin{eqnarray}
\varphi \left( z_{1}\right)  & = & P\frac{-i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{1}\right) }\left[ 1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right)
}}\right] \\
\psi \left( z_{2}\right)  & = & P\frac{+i}{2\left( s_{1}-s_{2}\right) \left(
1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left( 1+s^{2}_{2}\right)
}}\right] \label{equation array}
\end{eqnarray}

\end_inset

\layout Standard

\begin_inset Formula \begin{equation}
\label{matrix}
\left. \begin{array}{ccc}
\varphi \left( z_{1}\right)  & = & \displaystyle {P\frac{-i}{2\left(
s_{1}-s_{2}\right) \left( 1+is_{1}\right) }\left[
1-\frac{z_{1}}{\sqrt{z^{2}_{1}-R^{2}\left( 1+s^{2}_{1}\right) }}\right] }\\
\psi \left( z_{2}\right)  & = & \displaystyle {P\frac{+i}{2\left( s_{1}-s_{2}\right)
\left( 1+is_{2}\right) }\left[ 1-\frac{z_{2}}{\sqrt{z^{2}_{2}-R^{2}\left(
1+s^{2}_{2}\right) }}\right] }
\end{array}\right\}
\end{equation}

\end_inset

\the_end