Hello,
I am not sure that I am writing to the right person.
If not, I appologize, and would appreciate if you could provide me with the correct contact.

I am a PhD student in the physics department in the hebrew university in jerusalem, israel. We have a linux system and so we are only using latex and openoffice with hebrew support. Since we work in physics, there are a few things we need to be able to write and cannot using the current equation editor, which seem like a trivial change:
We need to be able to write something like
" left | a rangle" ,
which should give |a>. This is very standard notation in quantum physics, and currently the only way we found to do this was by writing
" ` divides a > `",
which is of course a workaraound.
A similar problem arises when trying to write a function with different definitions for different ranges, or when

In latex, it is possible to have braces of different kinds (i.e. "\left( ... \right]") or even have an empty brace (i.e "\left."), and in any case rangle and langle should not be limited to being braces.

I am attaching a pdf and tex files of these examples in latex.

Thank you,
   Yishai Shimoni

\documentstyle{article}

\begin{document}

Examples of things I can't do in openoffice formula editor 
(and can do in microsoft office):

A state in quantum physics:
\begin{equation}
\left| \psi \right \rangle
\end{equation}

A formulat with different definitions for different ranges:
\begin{equation}
f(x) = 
\left\{
\begin{array}{ll}  
a & x>0 \\ b & x<0
\end{array}
\right.
\end{equation}

A set of equations:
\begin{equation}
\left\{
\begin{array}{l}
x+y=3 \\ x-y =2
\end{array}
\right.
\end{equation}

\end{document}
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