Opened 2 years ago

Last modified 15 months ago

#29811 closed enhancement

PolyhedronFace: Add methods to compute cones of feasible directions and affine tangent cones — at Initial Version

Reported by: Matthias Köppe Owned by:
Priority: major Milestone: sage-9.4
Component: geometry Keywords:
Cc: Jean-Philippe Labbé, gh-kliem, Michael Orlitzky, Yuan Zhou, Travis Scrimshaw Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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Description

In analogy to the existing method normal_cone.

For #29806 (Gram-Brianchon formula) I only need the (affine) tangent cones of a face, tcone(P, F). See for example https://epubs.siam.org/doi/pdf/10.1137/1.9781611972443.ch6 Def 6.2.2

But for completeness it would also be nice to have the (homogeneous) tangent cone, AKA the cone of feasible directions.

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