1- In a metric space (X, d), if A and A2 are open subsets of X then A1 U A2 is open in X. 2- In a metric space (X, d), A is the intersection of all closed subsets of X which contains A. 3- In a complete metric space (X, d), If A C X such that, A = A then A is complete as a sub space of X.
1- In a metric space (X, d), if A and A2 are open subsets of X then A1 U A2 is open in X. 2- In a metric space (X, d), A is the intersection of all closed subsets of X which contains A. 3- In a complete metric space (X, d), If A C X such that, A = A then A is complete as a sub space of X.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter7: Real And Complex Numbers
Section7.2: Complex Numbers And Quaternions
Problem 48E
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