Gists are a bad way to discuss code, because they live in isolation, and you can't make line comments.
If you have code, you can use a pull request. It is OK to submit a pull request that shouldn't be merged, but is just for discussion. Just make that clear in the title of the pull request. Ideally the code will evolve into something that can be merged, although it doesn't always. If there is no code, just discuss either here on the mailing list, or on a GitHub issue. Aaron Meurer On Sat, Nov 1, 2014 at 7:01 PM, Francesco Bonazzi <[email protected]> wrote: > Apart from the bug fixes, it's quite hard to go on rigorously. > > You wrote you have some hackish stuff about derivatives, on github you can > create a gist, which is usually a piece of code unrelated to a project, which > people can see and comment. > > If you realized, the tensor module only allows expanded polynomial > expressions, that is difficultto change because the algorithm was written for > that, and supporting something different would require a llot of rewrite. > > I have a pending PR on the tensor module, which is a major rewrite of the > code, but I'm not very satisfied of it. > > An alternative is to expose special objects such as partial derivatives to > the index structure of a tensor. > > If you like to do something, try to see how to create a covariant derivative > object that exposes the index structure. > > Say, CovarDerivative(i, A(j, k)) should be treated as a tensor of indices i j > k. You will realize that the way the tensor module was written makes this > task quite hard. > > -- > 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/5c27afa1-d279-40d8-bea2-a72aaf4f3d18%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 [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/CAKgW%3D6Jaf5e_kM7a_K7Xw%2B1_g9x5Td0TwdABROtNCZto%2B0-LWQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
