The Boolean intervals of Chevalley type are strongly non group-complemented
arXiv:1911.06076
Abstract
Let G be a finite Chevalley group and B a Borel subgroup. Then the interval [B,G] in L(G) is Boolean. We prove, using Zsigmondy's theorem, that for any element P in the open interval (B,G), its lattice-complement P^c is not a group-complement.
4 pages