If G is a group, prove that for all a, b G, (a) (a-1)-1 = a

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If G is a group, prove that for all a, b ∈ G,
(a) (a-1)-1 = a
(b) (ab)-1 = b-1a-1

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Discrete and Combinatorial Mathematics An Applied Introduction

ISBN: 978-0201726343

5th edition

Authors: Ralph P. Grimaldi

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Question Posted: Jun 21, 2016 09:07 AM

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If G is a group, prove that for all a, b G, (a) (a-1)-1 = a

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a The result follows from Theorem 161b since both ...View the full answer

Discrete and Combinatorial Mathematics An Applied Introduction

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