Consider G=D(5) a dihedral group as a group of permutations shown below sage: G=Dihedral Group(5) sage: list(G) [(), (1,5,4,3,2), (1,4,2,5,3), (1,3,5,2,4), (1,2,3,4,5), (2,5)(3,4), (1,5)(2,4), (1,4)(2,3), (1,3)(4,5), (1,2)(3,5)] a) Is {(),(1,3)(4,5} a subgroup of G? b) Is {(), (1,3)(4,5} a normal subgroup of G?

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.4: Cosets Of A Subgroup
Problem 24E: Find two groups of order 6 that are not isomorphic.
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Consider G=D(5) a dihedral group as a group of
permutations shown below
sage: G=Dihedral Group(5)
sage: list(G)
[(), (1,5,4,3,2), (1,4,2,5,3), (1,3,5,2,4), (1,2,3,4,5),
(2,5)(3,4), (1,5)(2,4), (1,4)(2,3), (1,3)(4,5), (1,2)(3,5)]
a) Is {(),(1,3)(4,5} a subgroup of G?
b)
Is {(), (1,3)(4,5} a normal subgroup of G?
Transcribed Image Text:Consider G=D(5) a dihedral group as a group of permutations shown below sage: G=Dihedral Group(5) sage: list(G) [(), (1,5,4,3,2), (1,4,2,5,3), (1,3,5,2,4), (1,2,3,4,5), (2,5)(3,4), (1,5)(2,4), (1,4)(2,3), (1,3)(4,5), (1,2)(3,5)] a) Is {(),(1,3)(4,5} a subgroup of G? b) Is {(), (1,3)(4,5} a normal subgroup of G?
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