Re: Issue 1010 in sympy: limit for 1/gamma(x) x-0

2013-09-21 Thread sympy
Updates: Status: Fixed Comment #9 on issue 1010 by skirpic...@gmail.com: limit for 1/gamma(x) x-0 http://code.google.com/p/sympy/issues/detail?id=1010 (No comment was entered for this change.) -- You received this message because this project is configured to send all issue

Issue 4027 in sympy: incorrect evaluation of integral

2013-09-21 Thread sympy
Status: New Owner: Labels: Type-Defect Priority-Medium WrongResult Integration New issue 4027 by sbmehta: incorrect evaluation of integral http://code.google.com/p/sympy/issues/detail?id=4027 integrate(x**x, (x, 0, 1)) should yield -(sum((-n)**-n, (n, 0, 1))) == 0.7834305107... (i.e.,

[sympy] Re: Determinant of big diagonal matrix

2013-09-21 Thread Pablo Puente
Hi Aaron, Thanks for the hints. I tried Matrix.det() with methods berkowitz, bareis an det_LU (docstring lu_decomposition method is wrong) and still takes forever. lu_decomposition takes 1 minute, but still it is too much for a diagonal matrix. I also tried using SparseMatrix.eigenvals()

[sympy] Re: Pattern matching

2013-09-21 Thread F. B.
Int[cos[a_.+b_.*x_], x_Symbol] := Sin[a+b*x] / b /; FreeQ[{a, b}, x] Here *a* and *b* are matched if they do not contain *x*. Well, I'm a bit confused, but I was just considering, when we call an integration function: *integrate(expression, x)* we already know that *x* is the integration

[sympy] isympy int to Integer conversion and history dict

2013-09-21 Thread F. B.
I was trying to access the history of my isympy session, isympy had been called with the -I parameter: Out[23] --- KeyError Traceback (most recent call last) ipython-input-41-cf8df9fd2a29 in

Re: [sympy] ANN: CSymPy, fast symbolic manipulation library, written in C++

2013-09-21 Thread Joachim Durchholz
Am 20.09.2013 22:49, schrieb F. B.: Any thought at CINT for C++ developing? http://root.cern.ch/drupal/content/cint This could help in order to avoid complications stemming from compilers. A C/C++ interpreter does not help with GPU debugging problems. Current-day graphic cards accept shader

Re: [sympy] ANN: CSymPy, fast symbolic manipulation library, written in C++

2013-09-21 Thread Stefan Krastanov
Being written by physicists, CERN or no, isn't necessarily a sign of high software quality. Actually, it is a pretty reliable sign of bad quality ;) -- You received this message because you are subscribed to the Google Groups sympy group. To unsubscribe from this group and stop receiving

Re: [sympy] ANN: CSymPy, fast symbolic manipulation library, written in C++

2013-09-21 Thread Ondřej Čertík
On Sat, Sep 21, 2013 at 6:18 AM, Joachim Durchholz j...@durchholz.org wrote: Am 20.09.2013 22:49, schrieb F. B.: [...] It was developed by physicists at CERN :) Many physicists still love Fortran. Because it is still the best language for the job, as long as you do numerics. I use Fortran