On Fri, Dec 18, 2009 at 12:05:48AM -0800, Anne Schilling wrote:
> Dear Dan,
>
> > I have uploaded a patch that implements Iwahori Hecke algebras for
> > arbitrary Finite
> > Cartan Types. I haven't checked to see if it works for affine types.
> >
> > http://trac.sagemath.org/sage_trac/ticket/7729
>
> Thank you! That is great. I might start playing around with it shortly.
Excellent, thanks! I'll look at it.
> > I also have a patch that implements the Bruhat order on the Weyl
> > group. I won't
> > post this immediately, but if anyone needs it I could post it any
> > time. (It is short.)
> > I hope it will be part of a patch that computes Kazhdan-Lusztig
> > polynomials.
What do you mean exactly by Bruhat order (comparisons / successors and
predecessors / building the poset)? There are already a couple
functions about Bruhat order implemented (successors/predecessors,
building the poset in the finite case).
Cheers,
Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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