QUESTION 3 Prove that a group G is abelian if and only if (ab)-1 = ab¬1 va,bEG

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.3: Subgroups
Problem 4TFE: True or false Label each of the following statements as either true or false, where is subgroup of...
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Question 3

QUESTION 3
Prove that a group G is abelian if and only if (ab)-1 = a-lb¬1 va,bEG
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QUESTION 4
Let G be a group and Ha normal subgroup of G. Show that if x,y EG such that xyEH then yx EH
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Transcribed Image Text:QUESTION 3 Prove that a group G is abelian if and only if (ab)-1 = a-lb¬1 va,bEG Attach File Browse Local Files QUESTION 4 Let G be a group and Ha normal subgroup of G. Show that if x,y EG such that xyEH then yx EH Attach File Browse Local Files
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