Let : A B be a mapping of sets, A a system of subsets of A, and 3 a system of subsets of B. Define S(A) = S(X) C B: X€ A). (8) = {) eA:Y e B}. %3D Prove that f-1(B) is a ring if B is a ring. Show that f(A) is not necessarily a ring if A is a ring. uehra
Let : A B be a mapping of sets, A a system of subsets of A, and 3 a system of subsets of B. Define S(A) = S(X) C B: X€ A). (8) = {) eA:Y e B}. %3D Prove that f-1(B) is a ring if B is a ring. Show that f(A) is not necessarily a ring if A is a ring. uehra
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.3: The Characteristic Of A Ring
Problem 4E
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