4. Let p: R S be a ring homomorphism. Show that J = ker p is a prime ideal if S is a domain. Show that J is a maximal ideal if S is a field and o is surjective.
4. Let p: R S be a ring homomorphism. Show that J = ker p is a prime ideal if S is a domain. Show that J is a maximal ideal if S is a field and o is surjective.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.1: Ideals And Quotient Rings
Problem 35E: Let R be a commutative ring with unity whose only ideals are {0} and R Prove that R is a...
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