Question 4. Fix a natural number n > 2, and define G, = {f :Z→Z : f is a bijection and f(i+n) = f(i) + n for all i € Z}. Prove that (Gn,o) is a group, where o is function composition. Note: you can assume without proof that function composition is associative.

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Question 4. Fix a natural number n > 2, and define
G, = {f :Z→Z:f is a bijection and f(i + n) = f(i) + n for all i E Z}.
Prove that (Gn,o) is a group, where o is function composition. Note: you can assume without proof that function
composition is associative.
Transcribed Image Text:Question 4. Fix a natural number n > 2, and define G, = {f :Z→Z:f is a bijection and f(i + n) = f(i) + n for all i E Z}. Prove that (Gn,o) is a group, where o is function composition. Note: you can assume without proof that function composition is associative.
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