arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0706.2579math.DGmath.MGmath.NT
收藏

负曲率测地线的性质

Prescribing the behaviour of geodesics in negative curvature

Jouni Parkkonen, Frédéric Paulin

摘要:

给定完备负曲黎曼流形M的一族(几乎)不相交的严格凸子集,如球、方球、全测地子流形的管状邻域等,本文的目的是构造M中的测地射线或直线,使它们在其中一个中有一次精确规定的(足够大的)穿透,否则避免(或不进入太多)它们.给出了几个应用,包括对[PP 1]的去云问题的明确改进,有限体积M中测地线高度的规定,或在封闭的M中绕闭测地线的螺旋时间的规定。我们还证明了霍尔在特殊的算术情况下和施密特-Sheingorn双曲曲面的霍尔射线现象,实际上只是一个负曲率性质。

英文摘要:

Given a family of (almost) disjoint strictly convex subsets of a complete negatively curved Riemannian manifold M, such as balls, horoballs, tubular neighborhoods of totally geodesic submanifolds, etc, the aim of this paper is to construct geodesic rays or lines in M which have exactly once an exactly prescribed (big enough) penetration in one of them, and otherwise avoid (or do not enter too much in) them. Several applications are given, including a definite improvement of the unclouding problem of [PP1], the prescription of heights of geodesic lines in a finite volume such M, or of spiraling times around a closed geodesic in a closed such M. We also prove that the Hall ray phenomenon described by Hall in special arithmetic situations and by Schmidt-Sheingorn for hyperbolic surfaces is in fact only a negative curvature property.

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。

↑