Re: [sage-combinat-devel] Re: Littelmann path model for crystal combinatorics

2011-06-22 Thread Nicolas M. Thiery
On Wed, Jun 22, 2011 at 07:57:43AM -0700, Reda CHHAIBI wrote: > > Would you consider working on it? > In fact, i was thinking about it... Excellent! That's what I was reading between the lines :-) > Before getting all fired up, i will need to see how the 'development > side' works, and learn more

Re: [sage-combinat-devel] Littelmann path model for crystal combinatorics

2011-06-22 Thread Nicolas M. Thiery
On Wed, Jun 22, 2011 at 08:24:28AM -0700, Anne Schilling wrote: > Yes, I think the alcove path model is less complex to implement; I had started implementing the Littleman path model in MuPAD. See crystals::littlemanPath at the end of [1]. I don't remember the status, but the code there is probab

[sage-combinat-devel] NSF grant

2011-06-22 Thread Florent Hivert
Dear sage/sage-combinat fan, I just got the following e-mail. The dead-line is very short but this looks interesting. It seems that sage or sage-combinat fits well in the call. What do you think ? Florent - Forwarded message - Subject: appel d'offre NSF (participation internatio

Re: [sage-combinat-devel] Littelmann path model for crystal combinatorics

2011-06-22 Thread Anne Schilling
On 6/22/11 8:44 AM, len...@albany.edu wrote: Yes, I think the alcove path model is less complex to implement; Brant Jones implemented it for classical types. As far as I remember a student of Cristian Lenart was thinking of generalizing this to affine types at the Sage Days in Toronto last year

Re: [sage-combinat-devel] Littelmann path model for crystal combinatorics

2011-06-22 Thread Anne Schilling
On 6/22/11 8:21 AM, Daniel Bump wrote: While checking tracker tickets, it seems that nobody is working on the littelmann path model for crystals right now... Still someone wrote this as "todo" in http://www.sagemath.org/doc/reference/sage/combinat/crystals/highest_weight_crystals.html Can you

Re: [sage-combinat-devel] Littelmann path model for crystal combinatorics

2011-06-22 Thread Daniel Bump
> While checking tracker tickets, it seems that nobody is working on the > littelmann path model for crystals right now... Still someone wrote > this as "todo" in > http://www.sagemath.org/doc/reference/sage/combinat/crystals/highest_weight_crystals.html > > Can you provide me with more informat

Re: [sage-combinat-devel] Subsets performance

2011-06-22 Thread Nicolas M. Thiery
On Wed, Jun 22, 2011 at 03:58:26PM +0200, Martin Rubey wrote: > shouldn't that be is_subset and is_superset? See the discussion on #10938. Cheers, Nicolas -- Nicolas M. ThiƩry "Isil" http://Nicolas.Thiery.name/ -- You received this message because you are subscr

[sage-combinat-devel] Re: Littelmann path model for crystal combinatorics

2011-06-22 Thread Reda CHHAIBI
> This is definitely the correct place. Good! > Most likely, I wrote it :-) Ok > As far as I know, no one has worked on this. On the other hand, this > should be a fairly short, self contained, and useful project. In fact, > a perfect project for a newcomer, typically during a Sage Days. > > Would

Re: [sage-combinat-devel] Subsets performance

2011-06-22 Thread Martin Rubey
"Nicolas M. Thiery" writes: > Dear Stefan, > > Thanks for your feedback! > > On Mon, Jun 20, 2011 at 02:08:18PM -0700, Stefan van Zwam wrote: >>Sorry to bug you again with this (I already did so a few months back), but >>I still have qualms with Sage's built-in Set type. For starter

Re: [sage-combinat-devel] Subsets performance

2011-06-22 Thread Nicolas M. Thiery
Dear Stefan, Thanks for your feedback! On Mon, Jun 20, 2011 at 02:08:18PM -0700, Stefan van Zwam wrote: >Sorry to bug you again with this (I already did so a few months back), but >I still have qualms with Sage's built-in Set type. For starters, it does >not offer the same int

Re: [sage-combinat-devel] Littelmann path model for crystal combinatorics

2011-06-22 Thread Nicolas M. Thiery
On Mon, Jun 20, 2011 at 03:17:57PM -0700, Reda CHHAIBI wrote: > Hi, I am quite new to sage and on the irc channel i was advised to ask > my question here. Was i wrong on whether starting this as a new > discussion? This is definitely the correct place. > While checking tracker tickets, it seems t

[sage-combinat-devel] Subsets performance

2011-06-22 Thread Stefan
Hi all, Sorry to bug you again with this (I already did so a few months back), but I still have qualms with Sage's built-in Set type. For starters, it does not offer the same interface that Python's frozenset offers (example: the issubset() method). But my more serious concern is speed. I woul

[sage-combinat-devel] Littelmann path model for crystal combinatorics

2011-06-22 Thread Reda CHHAIBI
Hi, I am quite new to sage and on the irc channel i was advised to ask my question here. Was i wrong on whether starting this as a new discussion? While checking tracker tickets, it seems that nobody is working on the littelmann path model for crystals right now... Still someone wrote this as "tod

[sage-combinat-devel] Subsets performance

2011-06-22 Thread Stefan van Zwam
Hi all, Sorry to bug you again with this (I already did so a few months back), but I still have qualms with Sage's built-in Set type. For starters, it does not offer the same interface that Python's frozenset offers (example: the issubset() method). But my more serious concern is speed. I woul