See the instructions for Exercise (19) on page T00 from Section 3,1 (a) Proposition. Let R be a relation on a set 4. If Ris symmetric and transitive, then R is reflexive Proof. Let x V€ A. If xR y, then v R xr since R is symmetric. Now, x Ry and v R x. and since R is transitive, we can conclude that x Rx. Therefore, R is reflexive.
See the instructions for Exercise (19) on page T00 from Section 3,1 (a) Proposition. Let R be a relation on a set 4. If Ris symmetric and transitive, then R is reflexive Proof. Let x V€ A. If xR y, then v R xr since R is symmetric. Now, x Ry and v R x. and since R is transitive, we can conclude that x Rx. Therefore, R is reflexive.
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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