https://groups.google.com/d/msgid/sympy/5f86b9c7-1ace-410c-aeb7-c57f505c42ff%40googlegroups.com
<https://groups.google.com/d/msgid/sympy/5f86b9c7-1ace-410c-aeb7-c57f505c42ff%40googlegroups.com?utm_medium=email_source=footer>.
For more options, visit https://groups.google.com/d/optout.
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Hello.
I play a little with Sympy Gamma and I think that it would be better to
not show sympy commands by default.
It should be better to decide to hide them and to have the possibility
to show sympy commands if we want it.
Just a suggestion. ;-)
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Enseignant Agrégé
a normal form if it exists ?
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French teacher of **math** in a high school **and **amateur **Python *
*developer*
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"sympy&q
Hello.
Have you try factorization ?
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French teacher of **math** in a high school **and **amateur **Python *
*developer*
2016-06-06 14:55 GMT+02:00 Richard Fateman <fate...@gmail.com>:
>
Hello.
It should be fairly easy to transform the sympy output into a Graphviz file.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French teacher of **math** in a high school **and **amateur **Python *
*developer*
2016-04-06 23:32 GMT+02:00
Hello
As a teacher in a high school, I think that a non modal window would be
really useful.
Le 24 mars 2016 06:46, "Aman Deep" a écrit :
> Hi Everyone,
>
>
> I was finally able to integrate mathquill with latex2sympy in the Jupyter
> notebook.
>
>
> Here is a screenshot
Hello.
I would like to use Sympy si as to do step by step calculations. My idea
would be to pay with the tree of expressions.
Does the tree API is rich enough for example to fins subtree ?
C.
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To
*
> (s+p2) ), then the inverse laplace transform becomes:
>
> k*e^(-p1*t) / (p1-p2) + k*e^(-p2*t) / (p1-p2)
>
> *which is what I prefer.* It is weird to me that adding a constant 'k'
> change the form that Sympy chooses to show the result.
>
> On Friday, January 1, 2016 at 2
Hello.
Have you triez to expand 1nd then to factorize the formula ?
Le 1 janv. 2016 03:42, "Ken" a écrit :
> I've just started learning Sympy. I wrote a few lines of code to perform a
> inverse laplace transform on a simple 2nd order transfunction:
>
> H(s) = 1 / ((s+p1) *
Hello.
The new operator @ could be usez to define composition of two functions :
g@f(x) = g(f(x)).
Bad or good idea ?
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h.
>
> Aaron Meurer
>
> On Sun, Oct 4, 2015 at 12:23 PM, Christophe Bal <projet...@gmail.com>
> wrote:
> > Hello.
> >
> > The new operator @ could be usez to define composition of two functions :
> > g@f(x) = g(f(x)).
> >
> > Bad or good idea ?
Hello.
Have you tried this ?
*from sympy import **
*class f(Function):*
*is_real = True*
*x = Symbol('x',real=True)*
*df = f.diff(x)*
*print(re(df))*
*print(im(df))*
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher
Hello.
All of this is normal. If you use for example print(latex(x**2/2,
mode='equation*')), you will have the expected behavior.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a "Lycée" **and **Python **amateur
I also vote for the TypeError.
Le 31 mai 2015 23:17, Joachim Durchholz j...@durchholz.org a écrit :
Am 31.05.2015 um 22:50 schrieb Aaron Meurer:
Perhaps we should make derivatives of booleans give TypeError. That
would make it much easier to see what is going on.
+1
Similarly,
And because *x^x* means *x xor x* which numeric value is *0* or *1*
so the derivative is equal to zero.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
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Hello.
I think that the 2nd writing will be hard to handle in more complex
calculus. Maybe the three possibilities should be available if an
assumption is made on x.
A simple user.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math
Why am I french ? I feel so sorry to be too far from LA...
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
2015-05-11 19:28 GMT+02:00 Brian Granger elliso...@gmail.com:
Hi all
Hello.
Thanks a lot for the guru's tips about local PRs.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
2015-04-02 17:52 GMT+02:00 Aaron Meurer asmeu...@gmail.com:
You can also
atom.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
2015-04-02 11:06 GMT+02:00 Francesco Bonazzi franz.bona...@gmail.com:
On Wednesday, April 1, 2015 at 11:35:40 PM UTC+2
Hello.
I'm learning git and I have a question abut the way the core developers of
sympy manages the multiple pull requests with potential conflict. How do
you do that ?
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée
Hello.
Maybe, it could be useful to have a abssimplify method that will try to
simplify abs expressions.
Christophe BAL
Le 11 févr. 2015 11:54, Arnaud Usciati rait...@gmail.com a écrit :
Hi,
I found another error limit :
If x = symbols('x', positive=True), limit(tan(abs(x))/acosh(x), x, pi
Ok. In that case, summation(exp(a*x), (x, 1.2, 1.5)) = 0 is a normal
feature.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
2015-02-03 9:11 GMT+01:00 Gaurav Dhingra axyd0
.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
2015-02-03 9:01 GMT+01:00 Gaurav Dhingra axyd0...@gmail.com:
Hi,
I want to know about the summation function used in sympy
Hello.
If I am not wrong, sympy prefers (-x + y) to (y - x) because a lexical
order is used.
*Christophe BAL*
*Enseignant de mathématiques en Lycée **et développeur Python amateur*
*---*
*French math teacher in a Lycée **and **Python **amateur developer*
2014-12-13 0:46 GMT+01:00 pdknsk pdk
Hello.
Have you considered a text in a matplotlib graph ?
Le 17 nov. 2014 13:51, Alan Bromborsky abro...@verizon.net a écrit :
If you would send me an example of your code I might be able to suggest
a solution.
On 11/17/2014 03:13 AM, jeanbigbo...@gmail.com wrote:
I'd love to be able to
(like floating point precision loss).
Christophe BAL
2014-10-31 0:04 GMT+01:00 Richard Fateman fate...@gmail.com:
On Wednesday, October 29, 2014 3:38:47 AM UTC-7, Christophe Bal wrote:
Hello.
I'm writing a french book about SageMathCloud and I'm looking for known
wrong results given
to a formula containing arctan whereas my solution do not
use it, and was more simple. The problem is that I have not noted this
example...
Maybe solving some polynomial of degree 3 can give such complicated
formulas that a human would not use.
Christophe BAL
2014-10-30 23:53 GMT+01:00 Richard
Thanks for this hint. If I find revelant example, I will post them in this
discussion.
2014-10-31 17:38 GMT+01:00 Aaron Meurer asmeu...@gmail.com:
On Fri, Oct 31, 2014 at 6:37 AM, Christophe Bal projet...@gmail.com
wrote:
Thanks for the answers.
Maybe integration will be a good candidate
I definitely like this example !
Christophe BAL
2014-10-31 17:33 GMT+01:00 Aaron Meurer asmeu...@gmail.com:
Here is a nice example
https://groups.google.com/d/msg/sympy/YpV5tyLvWe4/WWRYOTMNIhIJ. It
shows great precision loss when evaluating Legendre polynomials
naively. Unlike Wilkinson's
the binary approximations used in
the float format, and also the approximations made to do the binary sum.
On the other hand, it is easier to start with 0.1 and 1/10. I will add it
in my doc before talking about 0.1+0.2.
Christophe BAL
Le 31 oct. 2014 21:19, Richard Fateman fate...@gmail.com a écrit
posted this question on the Sage list without a lot of success.
Christophe BAL
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To post
Hello.
I'm looking for formal outputs that are not calculated as a human can do
(this is for a free french book). Do you know such kind of examples ?
Christophe BAL
PS : this questions has been posted on both Sage and Sympy lists.
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interval arithmetic in SymPy.
[1]: [How Futile are Mindless Assessments of Roundoff in
Floating-Point Computation?](
http://www.cs.berkeley.edu/~wkahan/Mindless.pdf)
On 29 October 2014 16:08, Christophe Bal projet...@gmail.com wrote:
Hello.
I'm writing a french book about SageMathCloud
+1
C.
2014-10-28 17:29 GMT+01:00 Aaron Meurer asmeu...@gmail.com:
Being open source is definitely a plus for SymPy here. The authors
could have stepped through SymPy with a debugger to help figure out
their problem, and submitted a pull request for a fix once they found
it.
It's not
Yes but the set of floats is not even a sub ring of the set of rational
numbers.
2014-10-03 5:43 GMT+02:00 Richard Fateman fate...@gmail.com:
On Thursday, October 2, 2014 11:11:14 AM UTC-7, Christophe Bal wrote:
And what about the following code ?
The user of Sympy must know that types
Just done.
2014-10-03 21:35 GMT+02:00 Sergey Kirpichev skirpic...@gmail.com:
On Thursday, October 2, 2014 5:02:10 PM UTC+4, Christophe Bal wrote:
For me the fact that 1/3 == S(1)/3 has value True sounds like a bug
because 1/3 is a float, and S(1)/3 a rational.
Looks as a bug
Hello.
For me the fact that 1/3 == S(1)/3 has value True sounds like a bug
because 1/3 is a float, and S(1)/3 a rational.
Christophe BAL
=== PYTHON ===
from sympy import *
a = 1/3
b = S(1)/3
print(a)
print(b)
print(a == b)
print(type(a))
print(type(b))
--- OUTPUT
On Thursday, October 2, 2014 6:02:10 AM UTC-7, Christophe Bal wrote:
Hello.
For me the fact that 1/3 == S(1)/3 has value True sounds like a bug
because 1/3 is a float, and S(1)/3 a rational.
Christophe BAL
=== PYTHON ===
from sympy import *
a = 1/3
b = S(1)/3
print(a)
print(b
Sorry, indeed I was looking for a solution for IPython notebook. In that
case, the solution dose not work. I have the following error message.
=
---
MultipleInstanceError Traceback
this question on sage list and one user points me to
Sympy.
Christophe BAL
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To post
): 1})
Out[28]:
n
a ⋅(a + b - 1) b
── - ─
a - 1a - 1
Aaron Meurer
On Thu, Sep 25, 2014 at 3:20 PM, Christophe Bal projet...@gmail.com
wrote:
Hello.
Is it possible to ask to Sympy to give formulas for simple recursive
sequences ?
For example
Hello.
There is n! permutations of a set of n elements and n! ~ sqrt(2 pi n)
(n/e)^n due to the Stirling's approximation. So you can expect to have all
the permuations with not small value of n.
Christophe BAL
2014-09-12 18:07 GMT+02:00 Aaron Meurer asmeu...@gmail.com:
SymPy can make use
Hello.
I do not know if it is the case but I think that sympy should have a domain
method for expressions. This will avoid error like for example float
calculations raising to 1 for example that wi-ould not be a natural but a
float.
C.
2014-06-21 17:08 GMT+02:00 Saurabh Jha
Hello.
Does your equation solvable symbolically ? At a first glance, I don't think.
C.
2014-06-16 10:39 GMT+02:00 Camille Chambon camille.cham...@gmail.com:
Hello,
I would like to find
c2
as
0.66 + 0.34 * (1 + 1.0 / c2) - 1.0 / ln(1 + c2) - 0.7 == 0
Thus I used the function
solve
Hello.
What do you want to do ?
Christophe BAL
2014-06-11 16:34 GMT+02:00 Amit Saha amitsaha...@gmail.com:
Hello,
I am looking for the simplest SymPy alternative to this:
import itertools
for p in itertools.permutations([1, 2, 4]):
... print(p)
...
(1, 2, 4)
(1, 4, 2)
(2, 1
Hello.
in Mathematica I can just do expr /.{x_*Conj[x_] - Abs[x]^2}
With an easy to use treeview class, I do not think that it will be too hard
to implement a method that can acheive this kind of using something like
expr.replace(x_*Conj[x_], Abs[x]^2)
Christophe BAL
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Hello.
All the receipts in this dicussion look very interesting.Maybe all of this
ones could be put in the official documentation.
Christophe BAL
2014-06-06 13:34 GMT+02:00 Andrei Berceanu andreiberce...@gmail.com:
The unflatten_mul function factorized the 2, but not the g, i.e. it returns
the bugs.
And then I suppose one could re-write the expressions in a more
user-friendly form?
What do you propose, Chris?
On Friday, June 6, 2014 2:16:15 PM UTC+2, Christophe Bal wrote:
Hello.
All the receipts in this dicussion look very interesting.Maybe all of
this ones could be put
A easy to use treeview will be a great tool. No ?
2014-06-06 19:52 GMT+02:00 F. B. franz.bona...@gmail.com:
I think that SymPy needs a better term rewriting system. And also a better
pattern matcher.
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Thanks for this usefull pedagogical tool.
Christophe BAL
2014-05-06 2:36 GMT+02:00 Stefan Krastanov krastanov.ste...@gmail.com:
You might find this interesting for debugging and code-diving.
https://zvzzt.wordpress.com/2014/05/03/python-recursion-visualization-with-rcviz/
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Hello.
The folowing code gives a wrong output in IPython. Indeed the fraction 1/4
disapears...
Christophe BAL
*-*
*from sympy import **
*init_printing()*
*x = var(x)*
*f = x**3 + cos(x+1/4)*
*print f*
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If I use *S(1)/4* or *1./4*, all works as expected.
I have understood that is normal because 1/4 is an euclidean division.
Sorry, I always use Python 3 where 1/4 is a float division.
2014-05-04 15:24 GMT+02:00 Christophe Bal projet...@gmail.com:
Hello.
The folowing code gives a wrong output
Hello.
The following terminal session shows a problem with the ASCII printing
because the two last lines.
At least, I would expect the use of *S(1)* in the *repr* which is a
technical output from my point of view. What do you think about this ?
Christophe BAL
*---*
* from
Hello,
thanks for the link https://github.com/ContinuumIO/pyalge. The problem I
met is that the examples are not commented so it is not easy to see a use
of this kind of features. I'm ver new to this kind of things.
What could be a use of this in Sympy ?
Sorry for this noob question. ;-)
[...] what you could do is take any float and convert it
to an exactly equal numeric quantity that is a sympy rational.
And you could take that number and convert it to a float.
without loss.
There is a little with this approach. The float algorithm are generally
more efficient that the
Does Sympy supports something like Decimal(1.234) of the standard module
decimal ? This could do the job.
On the other hand, Sympy should print something like Float(1.234, 10) so
as to say to the user that a float with a mantisse of 10 digits is used.
Good or wrong advices ? Is it feasible ?
--
, schrieb Christophe Bal:
Does Sympy supports something like Decimal(1.234) of the standard module
decimal ? This could do the job.
If that conversion goes through a Python float, this would already incur a
loss of precision because 1.234 is not a multiple of a power of 0.5.
On the other hand
You can prove that any valid IEEE float is a rational
No ! Why ? Because of the arithmetic rules. You can have approximation to
do. With decimals, you have to do exact calculations.
Christophe BAL.
2014-03-23 22:02 GMT+01:00 Richard Fateman fate...@gmail.com:
You can prove that any valid
Hello.
There is a difference between a decimal, ie a rational which can be written
N/10^P and a float. A float number is an approximation so you can't really
see it as rationals. No ?
Christophe BAL
2014-03-20 22:35 GMT+01:00 Aaron Meurer asmeu...@gmail.com:
Can you think of a fact
Hello,
you can also look at Bokeh http://bokeh.pydata.org/.
Christophe BAL
2014-03-18 8:50 GMT+01:00 SAHIL SHEKHAWAT sahilshekhawa...@gmail.com:
I have been working on a proposal to implement 3D plotting in SymPyGamma,
and Jason pointed me to the importance of d3.js and Three.js backend
This dependencies are due to the fact that this project focuses on datas.
I've pointed to this project just for the philosophy of this project.
If you want to propose a JS viewer, you just have to translate Sympy
plot to the syntax of D3.js and/or three.js or another free JS library.
This is not
Christophe!
I misunderstood what you said..This look nice
Also, With three.js we always have an option to fall back to html canvas
which every browser support ( specially IE7 ). I don't think that will a
problem. What you say?
On Tuesday, March 18, 2014 3:16:43 PM UTC+5:30, Christophe Bal
Sorry for the poorness of my english. Indeed when I wrote formulas I
think about legends containing formulas.
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This MathBox is just amazing !
2014-03-18 11:12 GMT+01:00 Christophe Bal projet...@gmail.com:
Sorry for the poorness of my english. Indeed when I wrote formulas I
think about legends containing formulas.
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sympy
Do not forget that fixed pictures are useful for paper reports. On the
other hand, I think that using web browsers for sliders is the better
solution to use actually because of the dynamical features and the JS
library that helps to build such sliders.
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I have a Mac and I can see all the official examples of Three.js.
Christophe BAL
2014-03-18 18:13 GMT+01:00 SAHIL SHEKHAWAT sahilshekhawa...@gmail.com:
Jason,
But all the browser do support HTML Canvas right?
and Three.js uses it as a fallback option if there is no WebGL.
On Tue, Mar 18
Thanks for this.
2014-03-10 23:39 GMT+01:00 Matthew Brett matthew.br...@gmail.com:
Sorry - I sent the message too early accidentally:
On Mon, Mar 10, 2014 at 3:31 PM, Matthew Brett matthew.br...@gmail.com
wrote:
Hi,
On Mon, Mar 10, 2014 at 3:25 PM, Christophe Bal projet...@gmail.com
Hello,
is there someone on this list that knows a good book reference about the
Karr summation algorithm ?
Christophe BAL
2014-03-10 0:12 GMT+01:00 someone someb...@bluewin.ch:
Hi,
I am Pritam.
I want implement the Karr algorithm for the google summer of code
2014 sympy organisation. I
Hello.
I've just seen that NumPy and matplotlib proposes a dmg installer for
Python 3. This is very usefull.
Is there just one dmg for SymPy ? If not, maybe the setup in the source
codes of NumPy and matplotlib could help to build such a dmg for SymPy.
Best regards.
C.
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Visit
. Hope this helps.
Comer
On Monday, March 10, 2014 3:04:37 AM UTC-4, Christophe Bal wrote:
Hello,
is there someone on this list that knows a good book reference about the
Karr summation algorithm ?
Christophe BAL
2014-03-10 0:12 GMT+01:00 someone some...@bluewin.ch:
Hi,
I am Pritam
+, - and /.
Best regards.
Christophe BAL
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:07 GMT+01:00 Matthew Brett matthew.br...@gmail.com:
Hi,
On Mon, Mar 10, 2014 at 11:59 AM, Aaron Meurer asmeu...@gmail.com wrote:
Can you point to this discussion?
Aaron Meurer
On Mon, Mar 10, 2014 at 4:31 AM, Christophe Bal projet...@gmail.com
wrote:
Hello.
I've just seen
Matthew, could you send me the code you use to build the DMG ?
-
sympy.test() is too simple for a french brain. :-) The tests give only one
warning and one error.
*WARNING*
sympy/core/tests/test_args.py[572]
Thanks 2.
2014-03-10 23:12 GMT+01:00 someone someb...@bluewin.ch:
Hi,
is there someone on this list that knows a good book reference about
the Karr summation algorithm ?
There are about 3 references which are more than a research paper:
1.) Symbolic Summation in Difference Fields
° that could be
better because it is near from the dot scalar of two vectors. *I do not
think that @ is really intuitive. *
A math user of Sympy, Numpy and Scipy that will note appreciate to use @
for the matrix multiplication.
Christophe BAL
2014-03-09 8:54 GMT+01:00 Joachim Durchholz j
.
On the other hand, we also have to heard that the elementwise multipication
is often used.
The most important thing will be to have a good choice.
Best regards.
Christophe BAL
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I've a little suggestion about planar object into a 3D scene.
*O = Point(2, 3, 4)*
*I = Point(4, 5, 4)*
J = Point(2, 3, 7)
*line = Line(Point(2,3), Point(3,5)) # z-plane by default*
*line2 = **putin((O, I, J), **line**) # Let's go in another plane*
This allows to easily put a planar scene in
z-plane must be changed to xy-plane. Sorry for this.
2014-03-05 10:26 GMT+01:00 Christophe Bal projet...@gmail.com:
I've a little suggestion about planar object into a 3D scene.
*O = Point(2, 3, 4)*
*I = Point(4, 5, 4)*
J = Point(2, 3, 7)
*line = Line(Point(2,3), Point(3,5)) # z-plane
be treated as a complex. By
giving an integer id for the kind of a number, and by choosing integer_id
rational_id reals_id imaginary_id complexe_id, then the kind of
number could be the maximum of all the id met in an expression.
What do you think about that ?
Christophe BAL
2014-03-04 12:36
Thanks for this two answers.
Christophe
2014-03-04 20:25 GMT+01:00 Mateusz Paprocki matt...@gmail.com:
Hi,
On 3 March 2014 16:30, Christophe Bal projet...@gmail.com wrote:
Hello.
Is there an equivalent of FullForm that produces simple treeview of a
formula ? Here is basic example
Hello.
In your prototype, you have written :
b.arbitrary_point('z') = Point(-13*z +5, -11*z+5, -8z+5)
c=Line(Point(2,3), Point(3,5)) # Here the default value of z is taken as 0
Why don't you work with a symbolic variable z ?
You will also have to take care of point in segment for example.
Sorry for my message, I was drunk... ;-)
2014-03-04 21:32 GMT+01:00 Akshay akshaynukal...@gmail.com:
c=Line(Point(2,3), Point(3,5)) # Here the default value of z is taken as 0
I meant that the z co-ordinate of the point is taken as 0.
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Hello.
Is there an equivalent of FullForm that produces simple treeview of a
formula ? Here is basic example seen in a video.
FullForm[x**2+x**3] = Plus[Power[x, 2], Power[y, 3]]
Best regards.
Christophe BAL
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parser.
Christophe BAL
Le 26 févr. 2014 01:10, Aaron Meurer asmeu...@gmail.com a écrit :
Previous PEPs have tried this and failed. This PEP is an attempt at a
compromise that suits the community's needs but still has potential to
be accepted by the BDFL.
Aaron Meurer
On Tue, Feb 25, 2014 at 5
Hello.
Can you give a little example showing how to define an infix operator in
Haskell ?
Christophe
Le 26 févr. 2014 00:02, Sergey Kirpichev skirpic...@gmail.com a écrit :
On Tuesday, February 25, 2014 8:31:02 PM UTC+4, Aaron Meurer wrote:
Some people on this list might be interested in
Hello.
How will you evaluate thé probability of à language?
Christophe, a simple user.
Le 23 févr. 2014 04:19, Aditya Shah adityasha...@gmail.com a écrit :
I would like to discuss my plan of action to develop the general parsing
framework for Sympy. Right now the code is quite messy. The
Thanks for the explanations.
2014-02-23 14:46 GMT+01:00 Aditya Shah adityasha...@gmail.com:
Hi Sachin,
While I do agree that inclusion of NLP parser would be a big project in
itself. But if implemented even as an add-on, it can be used to augment the
capabilities of Sympy Live.
Btw just a
() is not that much smarter, but it does
have a bad tendency to give wrong answers when gruntz() works just
fine.
Aaron Meurer
On Mon, Feb 17, 2014 at 1:29 PM, Christophe Bal projet...@gmail.com
wrote:
Thanks for this.
2014-02-17 19:21 GMT+01:00 Avichal Dayal avichal.da...@gmail.com:
However gruntz
Thanks.
I've just tried
2014-02-18 13:20 GMT+01:00 Sergey Kirpichev skirpic...@gmail.com:
On Tuesday, February 18, 2014 12:51:50 PM UTC+4, Christophe Bal wrote:
Hello,
what is the origin of this name gruntz ?
From the name of algorithm author.
2014-02-18 1:57 GMT+01:00 Aaron Meurer
Hello,
as a simple user, I think the support of conic and quadratic is also needed
for 2D and 3D geometry.
There is also a need to allow a way to put a 2D context into the 3D one.
Christophe BAL
2014-02-18 20:32 GMT+01:00 Akshay akshaynukal...@gmail.com:
Hello,
The current geometry module
Thanks for this reference.
Christophe
Le 19 févr. 2014 00:39, someone someb...@bluewin.ch a écrit :
Hi,
what is the origin of this name gruntz ?
On Computing Limits in a Symbolic Manipulation System:
ftp://ftp.inf.ethz.ch/doc/dissertations/th11432.ps.gz
A nice text to read.
--
You
Hello.
limit((x*exp(x))/(exp(x)-1), x, -oo)
gives
-oo
Is this a bug or am I a bug ?
Best regards.
Christophe
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Thanks for this.
2014-02-17 19:21 GMT+01:00 Avichal Dayal avichal.da...@gmail.com:
However gruntz gives the correct result:-
gruntz((x*exp(x)) / (exp(x)-1), x, -oo) gives 0
The part of code that is going wrong is already labeled as XXX: todo
More specifically the following:-
if abs(z0) is
Hello,
Gimp allows to convert this kind of file to a PDF one for example.
This format would be easier to read directly.
Best regards.
2014-02-15 22:47 GMT+01:00 Nitin Agarwal nitinagarwal3...@gmail.com:
xcf file is a GIMP Image file. You can probably use GIMP to open this file.
*Nitin
Thanks for this.
Christophe.
2014-02-06 Shipra Banga bangashi...@gmail.com:
Sympy runs on a python terminal as of now.
Using kivy I have tried to build a user-friendly interface which makes it
easier for users to type out maths equations using a customized virtual
keyboard for it.
Hello.
Akshay says :
My idea is to extend the current module which
has only ellipse class to add both Hyperbolae
and Parabolae classes to the Geometry module.
You could work on a class Conic. Using projective geometry, it's easy to
deal with all the different kinds of conics.
Christophe,
That's right but it could be useful to have such a class fir more general
context.
Le 29 janv. 2014 10:05, Akshay akshaynukal...@gmail.com a écrit :
@Christophe
I thought of that but Ellipse and Circle have already been
implemented.Furthermore one class cannot generalise all these conic
Hello.
What is the difference with à variable and à.constant in fir example the
formula a*x**2 + b*x + c ?
For mathematical point of view, a, b, c and x are.variables.
Christophe
Le 29 déc. 2013 16:26, Roger W raw...@gmail.com a écrit :
I want to develop a procedure in sympy to determine
Hello,
following the advice of Aaron, here is a more generic way to do that.
*=== CODE ===*
*from sympy import **
*variables = [*
*x for x, _ in zip(*
*numbered_symbols(prefix = 'x', start = 1), *
*range(1,4)*
*)*
*]*
*functions = [*
*f for f, _ in zip(*
*
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