Contact surgery and transverse invariants

Details Contact surgery and transverse invariants Contact surgery and transverse invariants

2010-05-17

arxiv.org/abs/1005.2813v2

Mathematics

Symplectic Geometry

25 pages, 8 figures. Text and figures slightly edited. Accepted for publication by the Journal of Topology

Scientific paper

We derive new existence results for tight contact structures on certain 3-manifolds which can be presented as surgery along specific knots in S^3. Indeed, we extend our earlier results on knots with maximal Thurston-Bennequin number being equal to 2g-1 to knots for which the maximal self-linking number satisfies the same equality. In the argument (using contact surgery) we define an invariant for transverse knots in contact 3-manifolds under the assumption that either the knot is null-homologous or the 3-manifold has no S^1xS^2-factor in its prime decomposition, and we study its properties using the Ozsvath-Szabo contact invariant.

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