Maximal Discrete Subgroups of $SO^+(2,n+2)$

Autor:	Krieg, Aloys, Schaps, Felix
Rok vydání:	2021
Předmět:	Mathematics - Number Theory 11F06 11F55
Druh dokumentu:	Working Paper
Popis:	We characterize the maximal discrete subgroups of $SO^+(2,n+2)$, which contain the discriminant kernel of an even lattice, which contains two hyperbolic planes over $\mathbb{Z}$. They coincide with the normalizers in $SO^+(2,n+2)$ and are given by the group of all integral matrices inside $SO^+(2,n+2)$, whenever the underlying lattice is maximal even. Finally we deal with the irreducible root lattices as examples.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2106.00529 Zobrazit plný text záznamu View this record from Arxiv