Hi Sympy currently lacks a class based representation for series expansions. Though the current approach works well, it has its problems, like- all types of series are lumped under one name, issues with infinite series, etc. Moreover, such an implementation, if successful, can also be ported to C++, which will be much faster. Hence, I would like to give series expansion a class representation.
There has been a lot of dicussion here : https://groups.google.com/forum/#!searchin/sympy/series/sympy/hiRuIHa8ImA/JLOBsMr9yUcJ This approach builds on ring_series.py and Ondrej's implementation here https://github.com/certik/sympy/blob/59492520b443ea5f0ef31fc018e9bc700b93b818/a.py is even faster than the existing one based on ring_series. I found another approach here https://github.com/sympy/sympy/wiki/UD-Sequences-and-formal-power-series-prototype which uses sequences to construct power series. There was an attempt to follow this approach in https://github.com/sympy/sympy/pull/7846 using formula based power series, but the PR is yet to be merged. How do the two approaches compare? What are the expectations from such a class based representation? Regards -- 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 [email protected]. To post to this group, send email to [email protected]. 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/f1739727-1645-4b1e-92ba-5a42fb191502%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
