19. a. Show that Z15 is isomorphic to Z3 Zs, where the group operation in each of Z15, Z3, and Z5 is addition. b. Show that Z12 is isomorphic to Z3 Z4, where all group operations are addition.
19. a. Show that Z15 is isomorphic to Z3 Zs, where the group operation in each of Z15, Z3, and Z5 is addition. b. Show that Z12 is isomorphic to Z3 Z4, where all group operations are addition.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.7: Direct Sums (optional)
Problem 19E: 19. a. Show that is isomorphic to , where the group operation in each of , and is addition.
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![19. a. Show that Z15 is isomorphic to Z3 Zs, where the group operation in each of Z15,
Z3, and Z5 is addition.
b. Show that Z12 is isomorphic to Z3 Z4, where all group operations are addition.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd3d2ef81-eb1a-49fd-9c42-f666692ec805%2F17781e83-50d9-475d-b173-6845362e3460%2Fpsxmy27_processed.jpeg&w=3840&q=75)
Transcribed Image Text:19. a. Show that Z15 is isomorphic to Z3 Zs, where the group operation in each of Z15,
Z3, and Z5 is addition.
b. Show that Z12 is isomorphic to Z3 Z4, where all group operations are addition.
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