Show that Oa = {a} if and only if a e Z(G).

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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modern algebra

10. Let G be a group and let G act on itself by conjugation. For a e G, denote Oa the orbit of a
under conjugation action. The orbits under the conjugation action are called the
conjugacy classes of G.
(a) Show that Oa = {a} if and only if a e Z(G).
Transcribed Image Text:10. Let G be a group and let G act on itself by conjugation. For a e G, denote Oa the orbit of a under conjugation action. The orbits under the conjugation action are called the conjugacy classes of G. (a) Show that Oa = {a} if and only if a e Z(G).
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