Apparently, this user prefers to keep an air of mystery about them.
2 Two normal subgroups with trivial intersection, one is characteristic, what about the other? Dec 5 '12
2 p-element centralizing a Sylow p-subgroup Aug 19 '15
1 Inner automorphism of a group-ring Dec 9 '12
1 Lower central series starts with index 0, but upper central series starts with index 1, why? Mar 4