I have a list of n-permutations in Sage, for example:
U=[[2, 3, 1, 4, 5], [2, 4, 1, 3, 5], [2, 5, 1, 3, 4], [2, 1, 3, 4, 5], [1, 3, 4, 2, 5], [1, 3, 5, 2, 4], [1, 3, 2, 4, 5], [3, 1, 4, 2, 5], [3, 4, 1, 2, 5], [3, 5, 1, 2, 4], [3, 1, 2, 4, 5], [1, 2, 4, 5, 3], [1, 2, 4, 3, 5], [1, 4, 2, 5, 3], [1, 4, 5, 2, 3], [1, 4, 2, 3, 5], [4, 1, 2, 5, 3], [4, 1, 5, 2, 3], [4, 5, 1, 2, 3], [4, 1, 2, 3, 5], [1, 2, 3, 5, 4], [1, 2, 5, 3, 4], [1, 5, 2, 3, 4], [5, 1, 2, 3, 4], [1, 2, 3, 4, 5]]
Now I want to check whether this lists is in Av(π1,π2) , the permutations that avoid the two permutations π1 and π2 when π1 and π2 are given.
Is there an easy or even existing way to do this with Sage?