Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-25T09:09:45.382Z Has data issue: false hasContentIssue false

Hyperbolic manifolds and degenerating handle additions

Published online by Cambridge University Press:  09 April 2009

Martin Scharlemann
Affiliation:
Department of Mathematics, University of California, Santa Barbara, CA, 93106
Ying-Qing Wu
Affiliation:
Department of Mathematics, University of California, Santa Barbara, CA, 93106
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A 2-handle addition on the boundary of a hyperbolic 3-manifold M is called degenerating if the resulting manifold is not hyperbolic. There are examples that some manifolds admit infinitely many degenerating handle additions. But most of them are not ‘basic’. (See Section 1 for definitions). Our first main theorem shows that there are only finitely many basic degenerating handle additions. We also study the case that one of the handle additions produces a reducible manifold, and another produces a ∂-reducible manifold, showing that in this case either the two attaching curves are disjoint, or they can be isotoped into a once-punctured torus. A byproduct is a combinatorial proof of a similar known result about degenerating hyperbolic structures by Dehn filling.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1993

References

[1]Bleiler, S. and Hodgson, C., ‘Spherical space forms and Dehn filling’, preprint.Google Scholar
[2]Gordon, C., ‘Boundary slopes of punctured tori in 3-manifolds’, preprint.Google Scholar
[3]Gordon, C., ‘Dehn surgery on knots’, in: Proceedings of the International Congress of Mathematicians, Kyoto 1990 (Springer, Berlin, 1991) pp. 631642.Google Scholar
[4]Gordon, C. and Luecke, J., ‘Reducible manifolds and Dehn surgery’, preprint.Google Scholar
[5]Hempel, J., 3-manifolds, Ann. of Math. Studies 86 (Princeton Univ. Press, Princeton, 1976).Google Scholar
[6]Jaco, W., ‘Lectures on three-manifold topology’, Regional Conference Series in Mathematics 43 (1981).Google Scholar
[7]Myers, R., ‘Excellent 1-manifolds in compact 3-manifolds’, Top. Appl., to appear.Google Scholar
[8]Scharlemann, M., ‘Producing reducible 3-manifolds by surgery on a knot’, Topology 29 (1990), 481500.CrossRefGoogle Scholar
[9]Thurston, W., The geometry and topology of 3-manifolds (Lecture notes, Princeton University, 1978).Google Scholar
[10]Wu, Y-Q., ‘Incompressibility of surfaces in surgered 3-manifolds’, Topology 31 (1992), 271280.CrossRefGoogle Scholar