11. Let R and R' be two rings. A mapping f: R→R' is called an antihomomorphism, if f (x +y) =f (x) +fv) and f(xry) =fV)f (x) V x, y e R. Let f, 8 be two antihomomorphisms of a ring R into R. Prove that fg : R →R is a homomorphism.
11. Let R and R' be two rings. A mapping f: R→R' is called an antihomomorphism, if f (x +y) =f (x) +fv) and f(xry) =fV)f (x) V x, y e R. Let f, 8 be two antihomomorphisms of a ring R into R. Prove that fg : R →R is a homomorphism.
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 14E:
14. Let be a ring with unity . Verify that the mapping defined by is a homomorphism.
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