Opened 2 years ago

Last modified 2 years ago

#29191 new task

Polytopal constructions for combinatorial polyhedra

Reported by: gh-kliem Owned by:
Priority: major Milestone: sage-wishlist
Component: geometry Keywords:
Cc: jipilab, gh-LaisRast Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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Description (last modified by gh-kliem)

Many polytopal constructions are purely combinatorial and it should therefore be possible to do them just with CombinatorialPolyhedron. We collect them here:

  • #29190: polar/dual,
  • product,
  • join,
  • face truncation,
  • face stacking,
  • lawrence extension,
  • lawrence polytope,
  • #30440: pyramid,
  • bipyramid,
  • prism,
  • truncation,
  • face as polyhedron,
  • P/face (coface as polyhedron),
  • given two faces F < G, obtain the interval [F,G] as polyhedron.

Change History (4)

comment:1 Changed 2 years ago by gh-kliem

  • Milestone changed from sage-9.1 to sage-wishlist

comment:2 Changed 2 years ago by jipilab

Some of them take some optional parameters... So each case might involve some intricate things to do, but yeah, I guess it would be great to speed things up using combin. polyhedra...

comment:3 Changed 2 years ago by gh-kliem

Well, I don't know about whether this will speed things up in general. But lets say you really care about the combinatorics of the faces of a polyhedron. Then you want to avoid constructing a geometric object every time.

However, this is really not a priority for me, so it will take time.

comment:4 Changed 2 years ago by gh-kliem

  • Description modified (diff)
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