2) Let X, Y be non-empty sets equipped respectively with o-algebras F and G. Let AC P(Y) be any collection of subsets of Y that generates G, that is o(A) = G. Prove that if f-1(A) E F for every A € A, then f-1(G) E F for every G E G.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.2: Mappings
Problem 23E: Let a and b be constant integers with a0, and let the mapping f:ZZ be defined by f(x)=ax+b. Prove...
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(2) Let X, Y be non-empty sets equipped respectively with o-algebras F and G. Let
AC P(Y) be any collection of subsets of Y that generates G, that is o(A) = G.
Prove that if f-(A) E F for every A E A, then f-(G) E F for every G E G.
Transcribed Image Text:(2) Let X, Y be non-empty sets equipped respectively with o-algebras F and G. Let AC P(Y) be any collection of subsets of Y that generates G, that is o(A) = G. Prove that if f-(A) E F for every A E A, then f-(G) E F for every G E G.
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