Opened 4 months ago
Closed 4 months ago
#30292 closed defect (fixed)
is_pyramid returns a wrong certificate
Reported by:  ghLaisRast  Owned by:  

Priority:  critical  Milestone:  sage9.2 
Component:  geometry  Keywords:  polytope, combinatorialpolyhedron, is_pyramid 
Cc:  jipilab, ghkliem  Merged in:  
Authors:  Jonathan Kliem  Reviewers:  Matthias Koeppe 
Report Upstream:  N/A  Work issues:  
Branch:  4c5c730 (Commits)  Commit:  4c5c730e216d0d160408d2474adcc51b33d28075 
Dependencies:  Stopgaps: 
Description
The method is_pyramid
of CombinatorialPolyhedron
returns a wrong certificate:
sage: Polyhedron([[0, 1, 1], [0, 1, 1], [0, 1, 1], [0, 1, 1], [1, 0, 0]]).is_pyramid(certificate=True) (True, A vertex at (0, 1, 1))
This bug introduced in #29189; the indexing in _face_iter(True, 0)
is different from the indexing in Vrepresentation
.
Change History (8)
comment:1 Changed 4 months ago by
comment:2 Changed 4 months ago by
 Branch set to public/30292
 Commit set to fb22b485e74152bc740eeb577eb1f90413eca342
 Status changed from new to needs_review
New commits:
fb22b48  fix certificate for pyramid

comment:3 Changed 4 months ago by
Perhaps there should be a _test... method that checks the certificate?
comment:4 Changed 4 months ago by
 Commit changed from fb22b485e74152bc740eeb577eb1f90413eca342 to 4c5c730e216d0d160408d2474adcc51b33d28075
Branch pushed to git repo; I updated commit sha1. New commits:
4c5c730  add method `_test_pyramid`

comment:5 Changed 4 months ago by
 Reviewers set to Matthias Koeppe
 Status changed from needs_review to positive_review
comment:6 Changed 4 months ago by
 Priority changed from major to critical
comment:7 Changed 4 months ago by
Thank you.
comment:8 Changed 4 months ago by
 Branch changed from public/30292 to 4c5c730e216d0d160408d2474adcc51b33d28075
 Resolution set to fixed
 Status changed from positive_review to closed
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Thanks for catching this. Stupid mistake.