Opened 7 years ago

Closed 7 years ago

#18470 closed enhancement (fixed)

Implement the path model for B infinity

Reported by: tscrim Owned by: sage-combinat
Priority: major Milestone: sage-6.8
Component: combinatorics Keywords: crystals
Cc: sage-combinat, bsalisbury1 Merged in:
Authors: Travis Scrimshaw Reviewers: Ben Salisbury
Report Upstream: N/A Work issues:
Branch: 3ddc20b (Commits, GitHub, GitLab) Commit: 3ddc20b6595bb6f0731814a0f714039390b6b3fd
Dependencies: #18469 Stopgaps:

Status badges


Using the elementary crystals B_i, we can iterate the following crystal morphism B(oo) \to B_i \otimes B(oo) to obtain a crystal model for B(oo). This ticket implements this model by using the fact that one only requires a finite list.

Change History (7)

comment:1 Changed 7 years ago by tscrim

  • Branch set to public/crystals/path_Binf-18470
  • Commit set to 4c0032a3b4f4c1770d3d73a3a1c9db5121d10550
  • Status changed from new to needs_review

I'm not completely happy with the current implementation as it creates a lot of generally unnecessary factors and the print representation isn't great. However I'm thinking these would be for followup tickets, one which makes the printing of the elementary crystals more verbose, the other for a consolidated version for the crystal BI in the notation in the documentation.

New commits:

9a24ea0Fixing _sig for epsilon/phi returning -inf.
4c0032aAdded path model for B(oo).

comment:2 Changed 7 years ago by tscrim

  • Dependencies set to #18469

comment:3 Changed 7 years ago by git

  • Commit changed from 4c0032a3b4f4c1770d3d73a3a1c9db5121d10550 to d1ea922392907ef9836e1ae0cdb03036cdfe6bd9

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

70129ffMerge branch 'public/crystals/path_Binf-18470' into 6.8.b0
d1ea922trac #18470 typo in the doc

comment:4 Changed 7 years ago by git

  • Commit changed from d1ea922392907ef9836e1ae0cdb03036cdfe6bd9 to 3ddc20b6595bb6f0731814a0f714039390b6b3fd

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

3ddc20bDocumentation changes per review

comment:5 Changed 7 years ago by bsalisbury1

Hi Travis,

I pushed some changes to the documentation. If you are okay with them (and see no either new or missed mistakes), then you may set this to positive review on my behalf.

Best, Ben

comment:6 Changed 7 years ago by tscrim

  • Reviewers set to Ben Salisbury
  • Status changed from needs_review to positive_review

LGTM. Thanks Ben!

comment:7 Changed 7 years ago by vbraun

  • Branch changed from public/crystals/path_Binf-18470 to 3ddc20b6595bb6f0731814a0f714039390b6b3fd
  • Resolution set to fixed
  • Status changed from positive_review to closed
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