Let X and Y be two discrete spaces, then * X is never homeomorphic to Y X is homomorphic to Y if and only if X and Y are both infinite X is homeomorphic to Y if and only if X and Y have the same cardinality X is homeomorphic to Y if and only if X and Y are both finite
Let X and Y be two discrete spaces, then * X is never homeomorphic to Y X is homomorphic to Y if and only if X and Y are both infinite X is homeomorphic to Y if and only if X and Y have the same cardinality X is homeomorphic to Y if and only if X and Y are both finite
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 16E: 16. Let and define on by if and only if . Determine whether is reflexive, symmetric, or...
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