kasper 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. > > Cheers, > Kasper > > > > > You might want to look at the geometric algebra package in the latest sympy repository (see html docs that can be compiled from repository). Also see "Geometric Algebra for Physicists" by Doran & Lasenby.
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