[sympy] free_symbols problem ?

2017-03-07 Thread Loïc Gouarin
Hi, I have this code from sympy import * i = Idx('i') A = Indexed('A', i) A.free_symbols for a in A.free_symbols: print(type(a)) It seems that the behavior has changed. With a previous version of SymPy, all the types are Symbol which is what I expected. But in the master branch, t

[sympy] Re: free_symbols problem ?

2017-03-07 Thread Loïc Gouarin
Ok. I saw the change in codegen for this problem. Sorry for this post. Loic -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To pos

[sympy] Interested in Contributing to SymPy for GSOC 2017

2017-03-07 Thread Shashwat Aggarwal
Hello Folks, I'm Shashwat Aggarwal, a sophomore from Netaji Subhas Institute of Technology(NSIT) New Delhi, India. I am quite fond of Physics and Mathematics and thus really interested in contributing to SymPy as a part of GSOC project. I have checked SymPy's Project Ideas list, and have found

[sympy] GSOC 2017 Physics

2017-03-07 Thread Guillermo ramos
Hello Everyone, My name is Guillermo Ramos-Macias and I am a third-year student studying Computer Science and Physics. I started working in python and it has been my language of choice since then. I got to contribute to another open source project last summer (not through GSOC), and I really en

Re: [sympy] GSoC 2017 : Vector Integration

2017-03-07 Thread Alan Bromborsky
You should look at - http://www.ime.unicamp.br/~marcio/ps2009/spivak which covers differential forms and the generalized Stokes theorem which includes all the vector integration theorems. even more general is the fundamental (integration) theorem of geometric calculus - https://arxiv.org/abs/ma

Re: [sympy] GSoC 2017 : Vector Integration

2017-03-07 Thread Mohit Chandra
@brombo , Thank you for your help . I have taken Vector mathematics course in previous semester and thus I am familiar with some of the topics, so this issue of vector integration is of great interest to me. Actually, I wanted to know whether any previous work on vector integration has been don