Let N be a subgroup of a group G. N is normal in G if and only
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Let N be a subgroup of a group G. N is normal in G if and only if (right) congruence modulo N is a congruence relation on G.
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Let us first recall the definitions of normal subgroup and congruence relation A subgroup N of a group G is normal if for all g in G we have gN Ng whe...View the full answer
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Related Book For
Algebra Graduate Texts In Mathematics 73
ISBN: 9780387905181
8th Edition
Authors: Thomas W. Hungerford
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