CUSP STRUCTURES OF ALTERNATING LINKS

被引:17
作者
AITCHISON, IR
LUMSDEN, E
RUBINSTEIN, JH
机构
[1] Department of Mathematics, University of Melbourne, Parkville, 3052, Victoria
关键词
D O I
10.1007/BF01232034
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
An alternating link L(r) is canonically associated with every finite, connected, planar graph-GAMMA. The natural ideal polyhedral decomposition of the complement Of L(r) is investigated. Natural singular geometric structures exist on S3-L(r), with respect to which the geometry of the cusp has a shape reflecting the combinatorics of the underlying link projection. For the class of 'balanced graphs', this induces a flat structure on peripheral tori modelled on the tessellation of the plane by equilateral triangles. Examples of links containing immersed, closed pi-1-injective surfaces in their complements are given. These surfaces persist after 'most' surgeries on the link, the resulting closed 3-manifolds consequently being determined by their fundamental groups.
引用
收藏
页码:473 / 494
页数:22
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