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Open books and exact symplectic cobordisms

Mathematisches Institut, Universität zu Köln, Weyertal 86–90, 50931 Köln, Germany

https://doi.org/10.1142/S0129167X1850026XCited by:2 (Source: Crossref)

Abstract

Given two open books with equal pages, we show the existence of an exact symplectic cobordism whose negative end equals the disjoint union of the contact manifolds associated to the given open books, and whose positive end induces the contact manifold associated to the open book with the same page and concatenated monodromy. Using similar methods, we show the existence of strong fillings for contact manifolds associated with doubled open books, a certain class of fiber bundles over the circle obtained by performing the binding sum of two open books with equal pages and inverse monodromies. From this we conclude, following an outline by Wendl, that the complement of the binding of an open book cannot contain any local filling obstruction. Given a contact $3$ -manifold, according to Eliashberg there is a symplectic cobordism to a fibration over the circle with symplectic fibers. We extend this result to higher dimensions recovering a recent result by Dörner–Geiges–Zehmisch. Our cobordisms can also be thought of as the result of the attachment of a generalized symplectic $1$ -handle.

Keywords:

AMSC: 53D05, 53D10, 57R17, 57R65

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