(a) Let R* be the multiplicative group of nonzero real numbers, R** be the multiplicative group of positive real numbers and ƒ : R* →→ R** be defined by f(x)=x². (i) Check as to whether f is a homomorphism or not [Hint: first check as to whether f is well defined or not] (ii) If f is a homomorphism, then find its kernel
(a) Let R* be the multiplicative group of nonzero real numbers, R** be the multiplicative group of positive real numbers and ƒ : R* →→ R** be defined by f(x)=x². (i) Check as to whether f is a homomorphism or not [Hint: first check as to whether f is well defined or not] (ii) If f is a homomorphism, then find its kernel
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.5: Isomorphisms
Problem 12E: Exercises
12. Prove that the additive group of real numbers is isomorphic to the multiplicative...
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