On the contact boundaries of normal surface singularities. (English. Abridged French version) Zbl 1080.32025

Summary: The abstract boundary \(M\) of a normal complex-analytic surface singularity is canonically equipped with a contact structure. We show that if \(M\) is a rational homology sphere, then this contact structure is uniquely determined by the topological type of \(M\). An essential tool is the notion of open book carrying a contact structure, defined by E. Giroux.


32S25 Complex surface and hypersurface singularities
32S55 Milnor fibration; relations with knot theory
57R17 Symplectic and contact topology in high or arbitrary dimension
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