Can anyone help me explain this sage: o = lattice_polytope.cross_polytope(3) sage: F = o.face_lattice() sage: G = F.relabel(F._elements) sage: G[0].ambient() is o True sage: o = lattice_polytope.cross_polytope(3) sage: F = o.face_lattice() sage: G = F.relabel(F._elements) sage: G[0].ambient() is o False sage: G[0].ambient() is G[1].ambient() True
More importantly, I am interested in a work around, such that relabeling does not create copies. It works once with every lattice polytope and the second time it fails. The only thing that helps is to quit sage and restart it. Currently, I'm working on using CombinatorialPolyhedron to obtain the face lattice for lattice polytopes. It works nicely, but that the faces do not know the ambient polytope (exactly) anymore, which makes the doctests fail. Somehow the current setup works, but I'm puzzled on why. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/830b6ca7-32c7-4ad4-86b5-df8fa2736c39%40googlegroups.com.
