id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,merged,author,reviewer,upstream,work_issues,branch,commit,dependencies,stopgaps
29898,vertex facet graph for trivial polyhedra fails,gh-kliem,,"The vertex facet graph of `CombinatorialPolyhedron` only works for polyhedra of dimension at least one. With #29188 this makes it fail with for `Polyhedron_base` as well.
We fix this to return
- the `Digraph` on 0 vertices for the empty polyhedron and
- the `Digraph` on 1 vertex for the 0-dimensional polyhedron (it was misbehaved even before #29188).
We also ""fix"" the definition of facets to correspond to inequalities.
The `0`-dimensional polyhedron does not have facets in this case anymore.
(Before this ticket `n_facets` and `facets` would use different definitions of facets.)",defect,closed,major,sage-9.2,geometry,fixed,"polyhedra, vertex facet graph",jipilab gh-LaisRast,,Jonathan Kliem,Matthias Koeppe,N/A,,25cfaa04806fdd91dc1d5aebac5b946d10f19f83,,,