### 2.10.8 Product of two permutations : `p1op2`

`p1op2` takes as arguments two permutations.

`p1op2` returns the permutation obtained by composition :

Input :

`p1op2([3,4,5,2,0,1],[2,0,1,4,3,5])`

Output :

`[5,3,4,0,2,1]`

**Warning**

Composition is done using the standard mathematical notation,
that is the permutation given as second argument is performed first.