id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
28506 Direct sum of polyhedron is broken, so is minkowski difference and face truncation jipilab "The following returns a `TypeError`:
{{{
sage: s2 = polytopes.simplex(2)
sage: s3 = polytopes.simplex(3)
sage: t = s2.direct_sum(s3)
}}}
H-Polyhedra might have non-integral vertices and it is hard to tell from the H-Representation, whether this this is the case.
We fix `direct_sum`, `minkowski_difference` and `face_truncation` to try the quotient ring, if the given base ring does not work." defect closed major sage-9.0 geometry fixed polytopes gh-LaisRast gh-kliem Jonathan Kliem Jean-Philippe Labbé N/A 6756d8a870674020479fcceef4a8d450fb87ea4f 6756d8a870674020479fcceef4a8d450fb87ea4f