Opened 4 years ago

Last modified 4 years ago

#25868 new enhancement

Implement algebraic shifting operation for simplicial complexes

Reported by: jipilab Owned by:
Priority: major Milestone: sage-8.4
Component: geometry Keywords: simplicial complexes, shifting
Cc: jipilab, moritz, vdelecroix, jhpalmieri, tscrim Merged in:
Authors: Jean-Philippe Labbé Reviewers:
Report Upstream: N/A Work issues:
Branch: u/jipilab/shifting (Commits, GitHub, GitLab) Commit: 48f7294672f928ee064f5b0d419a05d6e3fc26f3
Dependencies: Stopgaps:

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Description

This tickets implements the exterior and symmetric shifting of simplicial complexes.

For more details on this operation, see for example:

https://arxiv.org/abs/math/0303233 https://arxiv.org/abs/0709.3265

where the operation is discussed in detail.

Change History (4)

comment:1 Changed 4 years ago by git

  • Commit set to 547760d51a7ff2023059de69b9f185cbc4852b31

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

11956b8First version of k-shift
cfe2872some more improvement on shift
99c3e4echanged method for shifting
547760dFirst draft of exterior shifting

comment:2 Changed 4 years ago by jipilab

I am still working on the function, but thought that I could upload my current working version.

I still would like to implement the symmetric shifting as well.

comment:3 Changed 4 years ago by jhpalmieri

  • Cc tscrim added

comment:4 Changed 4 years ago by git

  • Commit changed from 547760d51a7ff2023059de69b9f185cbc4852b31 to 48f7294672f928ee064f5b0d419a05d6e3fc26f3

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

4f390bcMerge branch 'shifting' into shiftingv83
48f7294Repaired counter and added references
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