Theorem. Let < be a preorder on a set X. Define the relation =, where x = y holds if and only if x < y and y < x. Then = is an equivalence relation on X.
Theorem. Let < be a preorder on a set X. Define the relation =, where x = y holds if and only if x < y and y < x. Then = is an equivalence relation on X.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 14E: In each of the following parts, a relation is defined on the set of all human beings. Determine...
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