Hi Kasper! On Sat, Feb 14, 2009 at 11:54 AM, kasper <kasper.peet...@googlemail.com> wrote: > > Hi all, > > I noticed that there is an entry on the todo list related to "objects > with indices (tensors)". I was wondering whether there is any interest > on the list to join forces with my open source tensor computer algebra > system "cadabra", http://www.aei.mpg.de/~peekas/cadabra/ . > > Tensor algebra is far from a trivial extension of 'scalar' algebra > (for lack of a better word for what sympy currently does), and I have > spent a lot of time making cadabra do things which are not possible in > any other 'list-based' CAS. Although my code is C++, I'd be happy to > brainstorm about possible ways to either link sympy to cadabra, or > else to re-implement my algorithms within sympy. > > In addition, cadabra has a fully graphical notebook front-end which > could potentially be adapted to work with sympy (this is independent > of whether or not you are interested in the tensor algorithms). > > Have a look at the sample notebooks and the tutorial in the reference > manual, and let me know.
Thanks for getting in touch with us. I am very impressed by Cadabra! I'll play with it and reply later here. Have you considered creating a cadabra package for Sage? They may even include it by default. In SymPy we will also be optionally using a Cythonized core, but if possible, we'd like to stick to Python whenever possible. What is your plan with Cadabra -- do you want to use it from Python? I'll look into the sources of it to get a better idea. I'll reply here hopefully this evening, Pacific time. Ondrej --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
