Re: [sympy] Reorganise the package structure

How about having having two folders, dense and sparse, in the matrices folder. The dense folder contains densematrix.py and linalg.py. densematrix.py contains the class DenseMatrix (the current Matrix class, or should the name remain the same ? ). The sparse folder has dokmatrix.py, linalg.py. d

Re: [sympy] Reorganise the package structure

+1 on linalg as that follows the convention of numpy/scipy. On Fri, May 27, 2011 at 6:04 PM, Andy Ray Terrel wrote: > I'm +1 for linalg over matrix/matrices.  Having a Matrix file and > putting all the linear algebra routines in it violates modularity and > extensibility.  Also it makes the libra

Re: [sympy] Uses and Size of Sympy Matrices

Hi, In sympy.physics.quantum we use sympy Matrix instances all over the place. These can be quite large (100x100 up to many 1000x1000. In the future we could get even bigger) and always have symbolic entries. At times we do like to convert them to numerical numpy arrays, but in many cases we re

Re: [sympy] why does terms_gcd clear the denominators of an expression

Hi, On 27 May 2011 21:08, Chris Smith wrote: > Aaron S. Meurer wrote: > >> Shouldn't it return 1? > > The quote I posted takes the approach that the divisor is the number that > divides both and still gives an integer, so our gcd and current primitive > method (soon to be changed) is consistent

Re: [sympy] Uses and Size of Sympy Matrices

Hi, I might use sparse numeric matrices (coefficients typically in QQ or some finite field) for computing reductions of a polynomial mod some other polynomials. Currently this is a bit far away and I don't really know the specifics other than that the matrices are sparse in general. Jeremias --

Re: [sympy] My first gsoc pull request

Hi Tom, On Tue, May 31, 2011 at 8:21 AM, Tom Bachmann wrote: > Hi all, > > I just created a pull request for the first installation of commits I > created for gsoc: https://github.com/sympy/sympy/pull/378/files > > Any comments appreciated. Wow, you did a *lot* of work. Awesome! I'll try to help

Re: [sympy] Re: Borrowing ideas from Polys to Matrix

Le mardi 31 mai 2011 à 09:43 -0700, Vinzent Steinberg a écrit : > On May 30, 9:52 pm, Mateusz Paprocki wrote: > > That could work: > > > > ZZ.sum([1, 2, 3]) -> sum([1, 2, 3]) > > RR.sum([1.0, 2.0]) -> mpmath.fsum([1.0, 2.0]) > > EX.sum([x, y, z]) -> Add(*[x, y, z]) > > > > etc. > > This is exactl

[sympy] Re: Borrowing ideas from Polys to Matrix

On May 30, 9:52 pm, Mateusz Paprocki wrote: > That could work: > > ZZ.sum([1, 2, 3]) -> sum([1, 2, 3]) > RR.sum([1.0, 2.0]) -> mpmath.fsum([1.0, 2.0]) > EX.sum([x, y, z]) -> Add(*[x, y, z]) > > etc. This is exactly what I have been thinking of. Vinzent -- You received this message because you

[sympy] Re: iterating subs over a list containing zeros

Hi, On May 30, 2:34 pm, gpap wrote: > > Hi, > > > I am very new to python and I am currently trying to migrate some code > > from mathematica. What I'm stuck with is the following: > > > I have created a linear system A.x = B, and I have  a list of > > replacement rules I would like to apply to t

[sympy] My first gsoc pull request

Hi all, I just created a pull request for the first installation of commits I created for gsoc: https://github.com/sympy/sympy/pull/378/files Any comments appreciated. Regards, Tom -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this gr