arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.0165math.GTmath.MG
收藏

有限型凸锥的离散自同构群

Discrete automorphism groups of convex cones of finite type

Eduard Looijenga

摘要:

本文研究了SL(n,Z)的子群,它们在实n-空间中保持一个开的非退化凸锥,并在该锥中允许一个多面体锥作为其基本区,且允许该多面体锥的某些面位于其边界上.例子有作用于自对偶锥的算术群,某些卡茨-穆迪代数的外尔群,并且在代数几何中作为投射流形的自同构群作用于其充分锥。

英文摘要:

We investigate subgroups of SL (n,Z) which preserve an open nondegenerate convex cone in real n-space and admit in that cone as fundamental domain a polyhedral cone of which some faces are allowed to lie on the boundary. Examples are arithmetic groups acting on selfdual cones, Weyl groups of certain Kac-Moody algebras and do occur in algebraic geometry as the automorphism groups of projective manifolds acting on their ample cones.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑