[sympy] Re: Manipulating expressions with vectors

On Friday, 15 January 2016 17:04:20 UTC+1, Alexander Lindsay wrote: > > > and carry them around in expressions that way because I want to *avoid* > simplifications like (C is another vector): A * B / (A * C) = B / C > > This is a trick: declare *A, B, C* as non commutative variables: In [1]:

Re: [sympy] Status of old/new assumptions systems

On 15 January 2016 at 15:06, Aaron Meurer wrote: > > In the released version (0.7.6.1), the systems are independent. In > master, the new assumptions (ask(), Q) read the old assumptions on > Symbols (is_positive, positive=True). > > For performance purposes, this was done in a

[sympy] Google Summer of Code 2016 - GSoC2016

Hi, Since SymPy is a NumFOCUS sponsored project and NumFOCUS will apply to be a mentoring organization on GSoC I want to know (1) if SymPy is planning to apply this year and (2) if want to apply under NumFOCUS umbrella. SymPy is welcome and encouraged to apply as separate mentoring organizations

Re: [sympy] Google Summer of Code 2016 - GSoC2016

We will apply as a mentoring org and use NumFOCUS if we don't get accepted. It looks like the application period starts February 8 and the deadline is February 19. If anyone wants to volunteer to help the first step is to copy the 2015 pages on the wiki to 2016 pages. Then we can start to update

Re: [sympy] Status of old/new assumptions systems

On Mon, Jan 18, 2016 at 6:32 AM, Oscar Benjamin wrote: > On 15 January 2016 at 15:06, Aaron Meurer wrote: >> >> In the released version (0.7.6.1), the systems are independent. In >> master, the new assumptions (ask(), Q) read the old assumptions on