Let F be a collection of subsets of a set X. Then the intersection A of all o-algebras of subsets of X that contain F is a o-algebra that contains F. Moreover, it is the smallest o-algebra of subsets of X that contains F in the sense that any o-algebra that contains F also contains A.
Let F be a collection of subsets of a set X. Then the intersection A of all o-algebras of subsets of X that contain F is a o-algebra that contains F. Moreover, it is the smallest o-algebra of subsets of X that contains F in the sense that any o-algebra that contains F also contains A.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 9E: In Exercises 610, a relation R is defined on the set Z of all integers, In each case, prove that R...
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