1. Determine whether the given subset of the set of positive rational numbers is a subgroup of the group Q+ under multiplication. H = { 3" | n E Z} = {...,3-3, 3-2,3-1, 3º, 3', 3², 3³, .} 1 1 1 = {..., 33' 32' 3 33 32 31, 3, 3?, 3³, ...} 1 1 1 - = {..., 1,3, 9, 27, ...} 27' 9'3
1. Determine whether the given subset of the set of positive rational numbers is a subgroup of the group Q+ under multiplication. H = { 3" | n E Z} = {...,3-3, 3-2,3-1, 3º, 3', 3², 3³, .} 1 1 1 = {..., 33' 32' 3 33 32 31, 3, 3?, 3³, ...} 1 1 1 - = {..., 1,3, 9, 27, ...} 27' 9'3
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.3: Subgroups
Problem 12E: Prove or disprove that H={ hGh1=h } is a subgroup of the group G if G is abelian.
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