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if P and Q are 2 permutations of X, their product, P.Q, is the permutation of X (X=1,2,3,4,5), obtained by following the mapping Q with the mapping P. if Q=2 3 4 1 5, and P is 1 2 5 3 4, then how do i find P.Q and Q.P ?

i have tried a few mappings but can never get the same answer as in the book :)

answer for P.Q is 2 5 3 1 4

answer for Q.P is 2 3 5 4 1

please can anyone explain the steps.

thanks

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# Permutation mapping

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