/sci/ - Science & Math

>>11536177
>seems to be
The completely inverted permutation is given as the composition of all the transpositions of the form [math](m \quad k-m)[/math], where [math]m < k/2[/math], and m can be zero.
So the parity should be [math](-1)^{ \lfloor k/2 \rfloor }[/math], which seems to check out for 1, 2, 3, 4 and 5 when I manually computed them.

Although I wouldn't put five or six typos past me.