[sage-devel] "!=" is different from "not ==" for permutation groups

Hello, "!=" does not seem to work for permutation groups. sage: G = SymmetricGroup(2) sage: H = PermutationGroup([(1,2)]) sage: not G == H False sage: G != H True sage: G = PermutationGroup([(1,2)]) sage: H = PermutationGroup([(1,2)]) sage: not G == H False sage: G != H True sage: G = SymmetricGr

[sage-devel] Wrong automorphism group of IncidenceStructure

Hello, in my sage installation, the following code produces an odd output: B = [[1, 2, 3, 5, 7, 10], [1, 2, 3, 7, 10, 11], [1, 2, 4, 6, 9, 10], [1, 2, 4, 7, 8, 10], [1, 2, 5, 6, 10, 11], [1, 2, 7, 8, 9, 10], [2, 3, 4, 5, 9, 10], [2, 3, 4, 9, 10, 11], [2, 4, 5, 8, 10, 11], [2, 4, 6, 7, 9,