id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
24886 Implement one-point suspension and face split of polyhedron jipilab "The one-point suspension of a vertex `v` of a polyhedron `P` of dimension `d` is obtained by placing `P` in a dimension `d+1` vector space where the last coordinate is 0, then placing a vertex ""over"" `v` and a vertex ""below"" `v` in the last coordinate and taking the convex hull.
One can do a similar construction for faces of polyhedron by placing the two vertices relative to the center of the face. This way we get the face split of `P`.
On the way, the `center` function also got modified in the case when it is only a vertex so that it returns the vertex. This was necessary to make the one-point suspension consistent." enhancement closed major sage-8.3 geometry fixed days93, polytope, thursdaysbdx, IMA-PolyGeom vdelecroix moritz mkoeppe chapoton Jean-Philippe Labbé Frédéric Chapoton, Vincent Delecroix N/A 2d78b8760d4e3ee5ffe1634bc763b3889818e314 2d78b8760d4e3ee5ffe1634bc763b3889818e314