Fixed-point subgroup

In algebra, the fixed-point subgroup $G^f$ of an automorphism f of a group G is the subgroup of G:

More generally, if S is a set of automorphisms of G (i.e., a subset of th automorphism group of G), then the set of the elements of G that are left fixed by every automorphism in S is a subgroup of G, denoted by G.

单词	Invariant group
释义	Invariant group 英语百科 Fixed-point subgroup In algebra, the fixed-point subgroup $G^f$ of an automorphism f of a group G is the subgroup of G: More generally, if S is a set of automorphisms of G (i.e., a subset of th automorphism group of G), then the set of the elements of G that are left fixed by every automorphism in S is a subgroup of G, denoted by G.
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Invariant group

Fixed-point subgroup