On non-compact Heegaard splittings

Taylor, Scott A¹

¹Mathematics Department, University of California, Santa Barbara, CA 93101, USA

Algebraic and Geometric Topology, Tome 7 (2007) no. 2, pp. 603-672

Résumé

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 result is a classification of Heegaard splittings of those open 3–manifolds obtained by removing boundary components (not all of which are 2–spheres) from a compact 3–manifold. Also studied is the relationship between exhaustions and Heegaard splittings of eventually end-irreducible 3–manifolds. It is shown that Heegaard splittings of end-irreducible 3–manifolds are formed by amalgamating Heegaard splittings of boundary-irreducible compact submanifolds.

Détail

DOI : 10.2140/agt.2007.7.603

Keywords: non-compact 3–manifold, Heegaard splitting, weakly reducible

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