5. Consider the operation a * b = |b|. a) Is this a binary operation on the set S = R? Justify your answer. b) Is this a binary operation on the set S = {–4,–3, –1, 1,2,3,4}? Justify your answer.
5. Consider the operation a * b = |b|. a) Is this a binary operation on the set S = R? Justify your answer. b) Is this a binary operation on the set S = {–4,–3, –1, 1,2,3,4}? Justify your answer.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.4: Binary Operations
Problem 13E: Assume that is an associative binary operation on the non empty set A. Prove that a[ b(cd) ]=[...
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