Let G (a) be a cyclic group of order n. For each integer m, define a map fm : G -> G by fm(x) т = x"" for every x E G. Prove that (1) fm is a group homomorphism. (2) fm is an automorphism if and only if gcd(m, n) = 1. (3) Find the kernel and image of f4 whenn = т т 10.
Let G (a) be a cyclic group of order n. For each integer m, define a map fm : G -> G by fm(x) т = x"" for every x E G. Prove that (1) fm is a group homomorphism. (2) fm is an automorphism if and only if gcd(m, n) = 1. (3) Find the kernel and image of f4 whenn = т т 10.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.4: Cosets Of A Subgroup
Problem 30E: Let G be an abelian group of order 2n, where n is odd. Use Lagranges Theorem to prove that G...
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