From the picture can you prove that is the λσ is one to one and onto? plz with details

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 2CC
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From the picture can you prove that is the λσ is one to one and onto?

plz with details 

Theorem The number of even permutations in S, n 2, is equal to the number
of odd permutations; hence, the order of A, is n!/2.
Proof. Let A, be the set of even permutations in S, and B, be the set of odd
permutations. If we can show that there is a bijection between these sets, they
must contain the same number of elements. Fix a transposition o in S. Sincen 2
2, such a o exists. Define
do: An
by 1,(1) = or. It is easy to verify that 1, in one to one and onto.
Transcribed Image Text:Theorem The number of even permutations in S, n 2, is equal to the number of odd permutations; hence, the order of A, is n!/2. Proof. Let A, be the set of even permutations in S, and B, be the set of odd permutations. If we can show that there is a bijection between these sets, they must contain the same number of elements. Fix a transposition o in S. Sincen 2 2, such a o exists. Define do: An by 1,(1) = or. It is easy to verify that 1, in one to one and onto.
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