(a) Show that given a finite group G and g ∈ G, the subgroup generated by g is itself a group. (b) Are all groups cyclic? If so, prove it. If not, give a counterexample

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.5: Isomorphisms
Problem 39E: Suppose that is an isomorphism from the group G to the group G. Prove that if H is any subgroup of...
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(a) Show that given a finite group G and g ∈ G, the subgroup generated by g is itself a group.

(b) Are all groups cyclic? If so, prove it. If not, give a counterexample

Please do (a) Plot a and (b) 

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