[sympy] Possible error in SymPy function || GSoC

2021-03-28 Thread 'Aditya Saxena 4-Year B.Tech. Electronics Engineering' via sympy
Hi developers, I am Aditya Saxena, a 2nd year ECE student at IIT BHU. I wish to contribute to the SymPy community but I am new to SymPy and so to get a better understanding of it, I was going through the tutorial as suggested in the documentation. While going through it I noticed that the

Re: [sympy] Re: SymPy has been accepted into GSoC

2021-03-28 Thread Aaron Meurer
>From https://google.github.io/gsocguides/mentor/evaluations "For 2021, we have added more flexibility into the scheduling of student's work - they have 10 weeks to complete their 175 hour project. This means students can work on their project an average of 17.5 hours each week of the 10 week

Re: [sympy] ODE solver roadmap

2021-03-28 Thread Oscar Benjamin
On Sun, 28 Mar 2021 at 16:47, Naveen Saisreenivas Thota wrote: > > Hi Nijso, > > Thanks for linking the report! I'll check it out. I figured out the errors > in the code. For now, it seems to be working on some examples given in > Fritz's book and Kovacic's paper. The code is here - Rational

[sympy] Influence Line Diagrams in Continuum Mechanics Module

2021-03-28 Thread Psycho-Pirate
Hey everyone, I would like to implement Influence Line diagrams in the Beam Class of Continuum Mechanics Module. I do believe that they have great practical applications from the perspective of Civil Engineering and will further extend the functionality of the beam class. I have opened up a

Re: [sympy] ODE solver roadmap

2021-03-28 Thread Naveen Saisreenivas Thota
Hi Nijso, Thanks for linking the report! I'll check it out. I figured out the errors in the code. For now, it seems to be working on some examples given in Fritz's book and Kovacic's paper. The code is here - Rational Riccati Solver

Re: [sympy] ODE solver roadmap

2021-03-28 Thread nijso.be...@gmail.com
Hi Naveen, have a look at this report from the RISC group,where they list the algebraic solutions of the kamke ODEs. Check if there are cases that fall under case 1, or you can construct a solution yourself. Take the solution y(x) that belongs to case 1, select a couple of poles construct a

Re: [sympy] Re: Ordered terms of a new Expression

2021-03-28 Thread Paul Royik
Thank you! On Friday, March 26, 2021 at 10:54:02 PM UTC+2 asme...@gmail.com wrote: > I didn't test it extensively, but I think it should be enough to > override the sort_key method > > class Colored(Expr): > def sort_key(self, order=None): > return self.args[0].sort_key(order=order) > > Aaron

[sympy] Simplifying expressions involving the Abs function

2021-03-28 Thread 'B A' via sympy
I am a sympy beginner, and fairly new to python, so I suspect that my question has a simple answer, but have not been able to figure it out myself. I have sympy expressions containing the built-in Abs function. The arguments of Abs() are polynomials in a=symbol('a', real=True,positive=True)