Tag Archives: Yann Peresse

Chains of semigroups

Posted on 27/01/2015 by Peter Cameron

I have written here about the lovely formula for the length of the longest chain of subgroups in the symmetric group Sn: take n, increase it by 50% (rounding up if necessary), subtract the number of ones in the base … Continue reading →

Posted in exposition, open problems, symmetric group | Tagged , , , , , , | 7 Comments