Either give an example (with explanation), or explain why the following is not possible. (a) A group with no normal subgroups. (b) An element in Z15 × Z42 × Z10 of order 450. (c) A homomorphism from D8 into D8 whose kernel is {1, r, r2, r3}.
Either give an example (with explanation), or explain why the following is not possible. (a) A group with no normal subgroups. (b) An element in Z15 × Z42 × Z10 of order 450. (c) A homomorphism from D8 into D8 whose kernel is {1, r, r2, r3}.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.8: Some Results On Finite Abelian Groups (optional)
Problem 15E: 15. Assume that can be written as the direct sum , where is a cyclic group of order .
Prove that...
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Either give an example (with explanation), or explain why the following is not
possible.
(a) A group with no normal subgroups.
(b) An element in Z15 × Z42 × Z10 of order 450.
(c) A homomorphism from D8 into D8 whose kernel is {1, r, r2, r3}.
(d) An infinite group that is finitely generated.
(e) A permutation in S11 that is both even and odd.
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