[sage-combinat-devel] PartitionTuples

Dear All, I have just uploaded a patch which implements partition tuples; see sage_trac/ticket/13072 . Comments welcome. In particular, there is (what I think is) a minor bug in that the patch fails one of the category tests. I could avoid failin

[sage-combinat-devel] symmetric functions

Hi all, I've been working on a major revamp of symmetric functions. It is possible that the changes I have been making conflict with Martin's recent changes to the `principle specialization` and have broken the queue. They shouldn't technically interfere, but for some reason 'merge' wasn't eno

[sage-combinat-devel] Drawing intervals in Weyl groups

Hi -- someone is asking for software to draw intervals in Weyl groups, see http://mathoverflow.net/questions/98477/software-for-drawing-intervals-in-weyl-groups . Maybe someone can get him a satisfactory answer (and point him to sage.lacim.uqam.ca to get all sage-combinat features). Moreover, I