a b 2.3 Let e: (M,(R), +) → be defined by e a + d. where a,b,c,d ER (a) Prove that e is a homomorphism. (b) Determine Ker e.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.2: Ring Homomorphisms
Problem 12E: 12. Consider the mapping defined by . Decide whether is a homomorphism, and justify your decision.
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a b
2.3 Let e:(M,(R), + ) → <R,+> be defined by e
c d
= a + d where a,b,c,d ER
(a) Prove that e is a homomorphism.
(b) Determine Ker e.
Transcribed Image Text:a b 2.3 Let e:(M,(R), + ) → <R,+> be defined by e c d = a + d where a,b,c,d ER (a) Prove that e is a homomorphism. (b) Determine Ker e.
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