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arXiv math/0602581math.GT
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关于非紧Heegaard分裂

On non-compact Heegaard splittings

Scott Taylor

摘要:

一个开的3-流形的Heegaard分裂是将流形划分成两个相交于它们公共边界的非紧的平行体。本文证明了紧Heegaard分裂定理的几个非紧类似定理。主要定理是:如果N是一个紧致的、连通的、可定向的、具有非空边界的3-流形,不包含S^2分支,并且如果M是从N中去掉边界得到的,则M的任何两个Heegaard分裂都是真环境同位素的。这是沙里曼-汤普森和舒尔滕斯对(闭曲面)x I和(闭曲面)x S^1的分裂分类的非紧类比。Frohman-Meeks的工作和弱可约Heegaard分裂的Casson-Gordon定理的非紧模拟是关键工具。

英文摘要:

A Heegaard splitting of an open 3-manifold is the partition of the manifold into two non-compact handlebodies which intersect on their common boundary. This paper proves several non-compact analogues of theorems about compact Heegaard splittings. The main theorem is: if N is a compact, connected, orientable 3-manifold with non-empty boundary, containing no S^2 components, and if M is obtained from N by removing the boundary then any two Heegaard splittings of M are properly ambient isotopic. This is a non-compact analogue of the classifications of splittings of (closed surface) x I and (closed surface) x S^1 by Scharlemann-Thompson and Schultens. Work of Frohman-Meeks and a non-compact analogue of the Casson-Gordon theorem on weakly reducible Heegaard splittings are key tools.

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。

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