Re: [sage-combinat-devel] Root lattices friends

2010-07-12 Thread Nicolas M. Thiery
Hi Viviane! On Mon, Jul 12, 2010 at 12:14:50PM +0200, Viviane Pons wrote: I'm working on root sytem friends on the patch I'm developing for multivariate polynomials : trac_6629_abstract_ring_of_multivariate_polynomials_with_several_bases_vp.patch root system are used to

[sage-combinat-devel] Root lattices friends

2010-07-11 Thread Nicolas M. Thiery
Dear root system fans, I am in the process of refactoring root lattices friends to properly use categories. This in particular makes it trivial to adding structure to their group algebras, and so on (toward Schubert polynomials and friends as Adrien/Nicolas/Vivianne are working on). I