Re: [sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread Daniel Bump
> I also have my wrapping of Coxeter3 that I recently started to clean > up to make a proper spkg. That exposes Hecke algebras, Bruhat > interval-related code, and the KL polynomials. It's my goal to have > something soon. Wrapped Coxeter3 will probably be superior to what I would write for KL

Re: [sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread Nicolas M. Thiery
On Fri, Dec 18, 2009 at 02:33:29PM -0800, Mike Hansen wrote: > I also have my wrapping of Coxeter3 that I recently started to clean > up to make a proper spkg. That exposes Hecke algebras, Bruhat > interval-related code, and the KL polynomials. It's my goal to have > something soon. Cool! I can'

Re: [sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread Nicolas M. Thiery
Dear Dan, On Fri, Dec 18, 2009 at 08:53:27AM -0800, bump wrote: > Here is the patch: > > http://sporadic.stanford.edu/bump/patches/bruhat_order.patch > > You use it like this: > > W = WeylGroup("E6") > W.bruhat_ordered(x,y) > > where x and y are Weyl group elements. It returns true if

Re: [sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread Mike Hansen
I also have my wrapping of Coxeter3 that I recently started to clean up to make a proper spkg. That exposes Hecke algebras, Bruhat interval-related code, and the KL polynomials. It's my goal to have something soon. --Mike -- You received this message because you are subscribed to the Google Gr

[sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread bump
Anne wrote: > I am definitely very interested in having Bruhat order available soon. > How long would it be to wait until you post it as part of the KL patch? Nicolas wrote: > What do you mean exactly by Bruhat order (comparisons / successors and > predecessors / building the poset)? There are a

Re: [sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread Nicolas M. Thiery
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

Re: [sage-combinat-devel] Re: Hecke algebras

2009-12-18 Thread Anne Schilling
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. > I