On Wed, Mar 5, 2014 at 4:25 PM, Thilina Rathnayake <thilina.r...@gmail.com> wrote: > Hi All, > > I wish to apply for in this year's GSoC as well and I am interested in doing > a project with CSymPy. I worked with Ondrej on implementing basic number > theoretic functionalities for CSymPy during the last few months. Below are > some PRs related to above work. > > https://github.com/certik/csympy/pull/99 > https://github.com/certik/csympy/pull/103 > > IMO what we need to do with CSymPy right now is to follow the 80-20 > principle, i.e. implement that 20% of functionality that will be used in 80% > of the use cases. After that we can gradually implement the additional
Precisely. > functionalities as we wish. Ondrej has already done a great job in > implementing the required foundation to do this. > > With this idea in mind, the first two projects (Implementing elementary > functions and Implementing series expansion) listed in the ideas page under > CSymPy looked interesting to me. I hope to study these two projects in > detail > during the next few days and discuss with the group on how these should be > carried out. > > Also, What functionalities listed here (except for the two mentioned > earlier) > can be considered appropriate to be implemented in CSymPy at the present? Great question. So for example, I don't think we need to implement limits, because I don't know any application where one would need to call limit() in some loop for lots of different things, in other words, SymPy is fast enough for this. I think that were people find SymPy slow is: * general (long) expression manipulation * sparse multivariate polynomials (though the one in the latest sympy are pretty fast already), but I think there would be a benefit of having very efficient sparse multivariate poly implementation * Matrix manipulation with symbolic expressions, things like linear solve and similar. Most applications that I've seen where people tried SymPy and it was too slow have the above. So from this, the Matrix class and related algorithms is another great GSoC project I think. The algorithms are in SymPy, so I think it should be clear what to do. Ondrej -- 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 post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CADDwiVBHRcSoLsz5wyB5XV8rZXor68p2q-fzcQKQF5bpikq_Yw%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
