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This seems wrong. The conjugate closure should give the union of all conjugacy classes containing S, not the smallest normal subgroup containing S. For example, take S = { x } with x != 0, then the conjugate closure of S in (R,+) is just S. However S is not a subgroup of R. The statement would be true if S contained the identity however. — Preceding
unsigned comment added by
76.204.99.5 (
talk) 22:12, 6 May 2011 (UTC)reply
The conjugate closure is the subgroup GENERATED by S^G (thus written ). I made the same error about S={}. --
72.226.86.106 (
talk) 16:50, 7 September 2014 (UTC)reply