Alright,I will send a patch.Thanks On Friday, March 29, 2019 at 5:00:52 PM UTC+5:30, Arif Ahmed wrote: > > Under Improve rs_series, you need to provide some idea of how you plan to > implement at least a couple of those new rs_series functions that you > suggest. > Maybe you could implement one of the comparatively simpler ones and send a > PR for it. > > Also you mentioned: > > > I want to add more methods to ring_series so that its implementation is > more smooth,fast and efficient. > > You need to clarify this point a lot more. Which parts of the current > implementation need improving and how do you plan to go about doing over > the summer. > What gets more preference, improving the current implementation of > existing functions or implementing new ones ? > > Ditto for the other sections as well. > > In the Timeline, you should provide a proper breakup of the tasks in the > proposal and fairly appraise the time required for each. Most people > provide a Week-wise breakup of the summer. > > On Friday, March 29, 2019 at 11:08:12 AM UTC+5:30, Nabanita Dash wrote: >> >> I have added my application in wiki page . The link to which is >> https://github.com/sympy/sympy/wiki/GSoC-2019-Nabanita-Dash:Series-expansions:Improving-rs_series,Formal-Power-Series(series.formal),limits(series.limits) >> >> On Wednesday, March 27, 2019 at 5:37:47 PM UTC+5:30, Nabanita Dash wrote: >>> >>> Hi, >>> This is a GSoC-19 aspirant.I am a 2nd year CS Undergrad from >>> IIIT,BBSR,India. I want to work on the project idea of Series-Expansion.I >>> had discussed with Sartaj Singh as said by Aaron Meurer to geta hold on the >>> idea.My proposed ideas are as below: >>> !)Improve rs_series module >>> I plan to add fourier,taylor,maclaurian,dirichlet,stirling series and >>> other hyperbolic series in rs_series to make it efficient to use. >>> 2)Improve Formal Power Series >>> a)The limits applied to check fps and calculate logarithmic singularity >>> needs improvement as it creates XFAIL tests.I want to create an API that >>> accepts the singularities points and revise it to give positive results. >>> >>>f = asech(x) >>> >>>fps(f, x) >>> log(2) - log(x) - x**2/4 - 3*x**4/64 + O(x**6) >>> A logarithmic singularity is a singularity of an analytic function >>> whose main z-dependent term is of order O(lnz). An example is the >>> singularity of the Bessel function of the second kind >>> Y_0(z)∼(2gamma)/pi+2/piln(1/2z)+... at z=0 >>> ,Green function and some trignometric functions. >>> >>> Singularities with leading term consisting of nested logarithms, e.g., >>> lnlnlnz, are also considered logarithmic. >>> 3) Improve limits >>> I think of adding special functions for calculating limits at oo. >>> https://github.com/sympy/sympy/issues/14590 according to no special >>> functions have been used in limits code. >>> >>> def test_exponential2(): >>> n = Symbol('n') >>> assert limit((1 + x/(n + sin(n)))**n, n, oo) == exp(x) >>> Also,I plan to calculate limits at multivariate points.In SymP, >>> limit(a,z,z0,dir='+') is possible to calculate limits for a single variable >>> z,I want to calculate limit(f(x,y),x,y,x0,y0,dir='+') >>> >>> >>> I need suggestions to work on these ideas as well as any changes to be >>> made to these or propose any other idea is welcome. >>> >>>
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