Opened 6 years ago

Last modified 14 months ago

#11109 needs_work enhancement

Implement stable grothendieck polynomials for affine Weyl group elements in type A

Reported by: nthiery Owned by: sage-combinat
Priority: major Milestone: sage-7.2
Component: combinatorics Keywords: affine weyl groups
Cc: sage-combinat Merged in:
Authors: Nicolas M. Thiéry Reviewers:
Report Upstream: N/A Work issues:
Branch: public/ticket/11109 (Commits) Commit: f463b0e945a4e35891640d78da1813f1b1298a0f
Dependencies: Stopgaps:

Description (last modified by nthiery)

Patch under development on the Sage-Combinat queue:

http://combinat.sagemath.org/patches/file/tip/trac_11109-stable-grothendieck-polynomials-nt.patch

The current implementation currently gives incorrect results, due to a missuse of the Pieri factors. It will be fixed by adding another feature there.

Change History (10)

comment:1 Changed 6 years ago by nthiery

  • Description modified (diff)
  • Milestone set to sage-5.0
  • Status changed from new to needs_work
  • Summary changed from stable grothendieck polynomials for affine Weyl group elements in type A to Implement stable grothendieck polynomials for affine Weyl group elements in type A

comment:2 Changed 4 years ago by jdemeyer

  • Milestone changed from sage-5.11 to sage-5.12

comment:3 Changed 3 years ago by vbraun_spam

  • Milestone changed from sage-6.1 to sage-6.2

comment:4 Changed 3 years ago by vbraun_spam

  • Milestone changed from sage-6.2 to sage-6.3

comment:5 Changed 3 years ago by vbraun_spam

  • Milestone changed from sage-6.3 to sage-6.4

comment:6 Changed 2 years ago by chapoton

  • Branch set to public/ticket/11109
  • Commit set to 171a5c6d817f7ccb67a0a8cd92b90d1335f2c379

I made a git branch from the sage-combinat patch


New commits:

002a17dExperimental code for calculating (affine) Grothendieck polynomials
171a5c6trac #11109 a few pep details

comment:7 Changed 2 years ago by chapoton

  • Milestone changed from sage-6.4 to sage-6.8

comment:8 Changed 2 years ago by git

  • Commit changed from 171a5c6d817f7ccb67a0a8cd92b90d1335f2c379 to f463b0e945a4e35891640d78da1813f1b1298a0f

Branch pushed to git repo; I updated commit sha1. New commits:

f463b0etrac #11109 trying to fix some doctests

comment:9 Changed 2 years ago by nthiery

Oh, merci Frédéric!

I need to dive back into the code and algorithm for there remained a problem to fix. From the top of my mind, one needed to have access to some more combinatorial information on the Pieri factors.

comment:10 Changed 14 months ago by chapoton

  • Milestone changed from sage-6.8 to sage-7.2
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