Question 2 Suppose H and K are both finite subgroups of G, and |H| is coprime to K❘ (this means that gcd (|H|, |K|) = 1). Show that HK = {1}.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.5: Normal Subgroups
Problem 23E: 23. Prove that if and are normal subgroups of such that , then for all
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Question 2 Suppose H and K are both finite subgroups of G, and |H| is coprime to K❘ (this
means that gcd (|H|, |K|) = 1). Show that HK = {1}.
Transcribed Image Text:Question 2 Suppose H and K are both finite subgroups of G, and |H| is coprime to K❘ (this means that gcd (|H|, |K|) = 1). Show that HK = {1}.
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