(B) Define the triangle group. Then 1. Find all subgroups of it. 2. Is it abelian? Why?
(B) Define the triangle group. Then 1. Find all subgroups of it. 2. Is it abelian? Why?
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.2: Properties Of Group Elements
Problem 18E: Let a and b be elements of a group G. Prove that G is abelian if and only if (ab)2=a2b2.
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