Hi Grace, I don't know where it is you're looking to see the proposals for differential equations but I can tell you that the ODE systems code is a bit of a mess right now. See the label solvers.dsolve on Github for relevant issues/PRs.
At the moment there are many methods for very specific types of ODE but many are untested and/or don't work and many obvious cases are missing. What is needed is some good more general methods. In some cases I have tried to come up with examples but I can't come up with any example where the method is useful. If I was going to spend time fixing this then I would firstly: 1. Try to improve test coverage for the systems methods that are there 2. Fix the constant coeff homogeneous case (there are existing stalled PRs) and a number of open issues 3. Remove as many of possible of the methods that are special cases of 2. 4. Handle the non-homogeneous version of 2 (and remove corresponding special cases) 5. Add a generalised version of the nth_algebraic ODE solver that can be used for simple ODE systems. There will still be plenty more to do after that. A good way to start working on this would be to identify the untested methods and try to add tests for them. (If you run test_ode with coverage testing enabled you can see which ones are covered). -- Oscar On Sat, 6 Apr 2019 at 19:55, <garn...@hawk.iit.edu> wrote: > > Hi everyone, > > My name is Grace Arnold and I'm a computer science major at the Illinois > Institute of Technology. I have a few years of experience with Java and > Python, and have taken the Differential Equations course. I'm interested in > contributing to SymPy's Differential Equations methods. Specifically, I see > that general linear systems of more than two equations was mentioned in the > project ideas. I would love to contribute to this project, but if anyone > could provide me with more direction regarding this project (i.e. more > desirable functions to be implemented within differential equations), then I > would be happy to hear them! > > I will be working on my proposal and more ideas soon and will post them here, > if anyone would like to read it and tell me what I can improve upon. > > Thank you co much, > Grace Arnold > > > > -- > 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/44e5d117-da3a-41fb-a227-684c1de98e8c%40googlegroups.com. > 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/CAHVvXxRP0icL01vD%3Dqb7mg33j8DsHorMMXWj--YHYSBC3rmS-g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
