Definition 4.24: Let G be a group, and let Ω be the set of subgroups of G. Let G act on Ω by conjugation and let H ∈ Ω. For this action, the stabilizer of H in G is called the normalizer of H in G and is denoted by N_G(H). By definition, the normalizer of a subgroup H consists of those elements g ∈ G such that gHg^{−1} =
Definition 4.24: Let G be a group, and let Ω be the set of subgroups of G. Let G act on Ω by conjugation and let H ∈ Ω. For this action, the stabilizer of H in G is called the normalizer of H in G and is denoted by N_G(H). By definition, the normalizer of a subgroup H consists of those elements g ∈ G such that gHg^{−1} =
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.4: Cyclic Groups
Problem 31E: Exercises
31. Let be a group with its center:
.
Prove that if is the only element of order in ,...
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Definition 4.24: Let G be a group, and let Ω be the set of subgroups of G. Let G act on Ω by conjugation and let H ∈ Ω. For this action, the stabilizer of H in G is called the normalizer of H in G and is denoted by N_G(H).
By definition, the normalizer of a subgroup H consists of those elements g ∈ G such that gHg^{−1} = H. In other words, N_G(H) = { g ∈ G such that gHg^{−1} =H }.
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