Coxeter groups, Lorentzian lattices, and K3 surfaces
Richard E. Borcherds
所有作者
Richard E. Borcherds
文献摘要
The main result of this paper describes the normalizer of a finite parabolic
subgroup of a (possibly infinite) Coxeter group. We use this to compute the
automorphism groups of some Lorentzian lattices and K3 surfaces.