[sage-combinat-devel] Re: [sage-devel] Re: post more

2011-02-01 Thread BFJ
Ok, great. I'll start working on a patch and reply here again when it's on the trac server. -- Benjamin Jones University of Wisconsin-Stout jone...@uwstout.edu benjaminfjo...@gmail.com On Jan 31, 2:17 pm, Daniel Bump wrote: > > I don't know if it's helpful to post so much code, but here is my c

Re: [sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread Daniel Bump
> I don't know if it's helpful to post so much code, but here is my code > for the Demazure character and rank 2 plotting. The Demazure character > code contains the same idea as bump's code. There were a couple of mistakes in the code snippet that I posted. Here is another attempt, probably cor

[sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread BFJ
Hi all, Thanks for the replies. I'm on the sage-combinat-devel list now. I don't know if it's helpful to post so much code, but here is my code for the Demazure character and rank 2 plotting. The Demazure character code contains the same idea as bump's code. def demazure(ch, i): """ EXAM

Re: [sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread Nicolas M. Thiery
On Mon, Jan 31, 2011 at 07:05:27AM -0800, bump wrote: > No, the WeylCharacterRing is the representation ring of the Lie > group. A basis is indexed by dominant characters. The WeightRing > is the group algebra of the lattice. Oops, thanks for catching this; I indeed meant WeightRing. Cheers,

Re: [sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread Nicolas M. Thiery
On Mon, Jan 31, 2011 at 06:11:18AM -0800, Daniel Bump wrote: > The code snippet I posted does not assume #7922. Yup, only my comments about it :-) > At this moment #7922 needs work since it changes the syntax of a few > things enough to break some tests in the tutorial #8442, which has > been mer

[sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread bump
Nicolas wrote: > This looks very related to what Vivianne (and Adrien and Nicolas) is > implementing around Schubert polynomials and the like. Vivianne: can > you already compute demazure characters with your code? > (WeylCharacterRing is basically the group algebra of the ambient > lattice)? If

Re: [sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread Daniel Bump
> Ops, but all those comments are assuming that #7922 is applied, > which I still haven't reviewed ... Ok, that going up my TODO pile ... The code snippet I posted does not assume #7922. At this moment #7922 needs work since it changes the syntax of a few things enough to break some tests in

Re: [sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-31 Thread Nicolas M. Thiery
Dear Adrien, Anne, Benjamin, Dan, Vivianne, Nicolas, ... We should make sure to keep Benjamin in CC, since I am not sure he is on sage-combinat-devel (I bounced his message which was originally on sage-devel). On Sun, Jan 30, 2011 at 04:07:09PM -0800, bump wrote: > I too needed some code

[sage-combinat-devel] Re: [sage-devel] Re: post more

2011-01-30 Thread bump
I too needed some code to compute with Demazure characters using the weight ring. I agree that this is useful independent of the Demazure characters as implemented in the crystal code. What we did was just to make a standalone program that did what we needed, but it would make a good enhancement t