Z, show that the group 2Z/8Z is isomorphic to the group Z, but the ring 2Z/8Z is t isomorphic to the ring Z4.

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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In Z, show that the group 2Z/8Z is isomorphic to the group Z. but the ring 2Z/8Z is
not isomorphic to the ring Z4.
Transcribed Image Text:In Z, show that the group 2Z/8Z is isomorphic to the group Z. but the ring 2Z/8Z is not isomorphic to the ring Z4.
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