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Let f : A → B be a function, {B;}jej a family of subsets of B. Prove that f-'(Njej B;) = Njej ƒ¯'(B;)

Let f : A → B be a function, {B;}jej a family of subsets of B. Prove that f-'(Njej B;) = Njej ƒ¯'(B;)

Elements Of Modern Algebra
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 20E: Give an example of a relation R on a nonempty set A that is symmetric and transitive, but not...
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2. Let f : A → B be a function, {B;},jej a family of subsets of B. Prove that f-1(Njej B;) = Njej f1(B;)
Transcribed Image Text:2. Let f : A → B be a function, {B;},jej a family of subsets of B. Prove that f-1(Njej B;) = Njej f1(B;)
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