On Wednesday, March 16, 2016 at 4:18:29 AM UTC+5:30, Jason Moore wrote: > > I would try using the series expansion modules in SymPy and see if you can > discover some of the things it can't do. You can search the mailing list > and github issues to find out problems or suggestions for series expansions. > >
> I have gone through the mailing list discussion and found work of Avichal > Dayal , > *https://groups.google.com/forum/#!msg/sympy/o214NoJ7tJY/JbU7M_MbZesJ* > And would like to continue his work but , what happened to his work that he did in Gsoc 2014?? there are also work can be done like : 1.No separate functions for taylor, laurent, asymptotic etc. 2.Asymptotic Expansion: Many special and elementary functions do not have it implemented. I plan to do it for all whose expansion is possible. In general also SymPy does not do it properly. For e.g.:- series(sin(1/x+exp(-x))-sin(1/x), x, oo, 2) currently gives O(1/x**2) It can be better expanded as:- 1/exp(x) - 1/(2*exp(x)*x**2) + O(1/(exp(x)*x**4)) 3.There was some paper about computing limits with oscillating functions.so I would also want to work on that. > > Jason > moorepants.info > +01 530-601-9791 > > On Tue, Mar 15, 2016 at 6:42 AM, Abhishek Verma <iamverma...@gmail.com > <javascript:>> wrote: > >> Hello everyone , I am abhishek Verma and series expansion will be idea >> for gsoc 2016. >> What is my present status >> >> 1. I have read the book On Computing Limits in a >> Symbolic Manipulation System by gruntz. >> and have probably understood code of gruntz.py and limits.py >> >> 2.I have read Power Series in Computer Algebra >> WOLFRAM KOEPF understood what the algorithm thet are using to obtained >> the formal series. >> >> 3.I am reading the book "A New Algorithm Computing for Asymptotic Series" >> by Dominik Gruntz " >> >> >>> there are three things that I want to know >> >> 1. What is exactly status of series expansion in sympy? >> >> 2. What have done with work of Avichal Dayal on formal power and >> improvement of aysmtotic expansion? >> >> 3. Should polys/ring_series will be implementation of series expansion? >> >> Topic on which i will work - >> >> 1. Formal Power series and aymtotic expansion >> >> 2.extension of gruntz .py able to calculate the all types of limits >> (limits with occilating funtion) >> https://groups.google.com/forum/#!msg/sympy/h3aVz3y3n7g/JtqyPMakotMJ >> >> 3. operation with infinte series and series of multiple variable >> >> Anyone reply will be very helpful for me. I think there is a lot of room >> for improvement in series expansion. But probably scattered here and there. >> so need some direction. >> >> Cheers >> Abhishek Verma >> >> -- >> 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+un...@googlegroups.com <javascript:>. >> To post to this group, send email to sy...@googlegroups.com <javascript:> >> . >> Visit this group at https://groups.google.com/group/sympy. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/a14a97b6-31b0-4a26-9792-44f0fa1303e4%40googlegroups.com >> >> <https://groups.google.com/d/msgid/sympy/a14a97b6-31b0-4a26-9792-44f0fa1303e4%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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 https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/43f7dc8d-d639-4886-b05a-7ea0238a7f7c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
