On some examples and constructions of contact manifolds

Abstract

The first goal of this paper is to construct examples of higher dimensional contact manifolds with specific properties. Our main results in this direction are the existence of tight virtually overtwisted closed contact manifolds in all dimensions and the fact that every closed contact 3-manifold, which is not (smoothly) a rational homology sphere, contact--embeds with trivial normal bundle inside a hypertight closed contact 5-manifold. This uses known construction procedures by Bourgeois (on products with tori) and Geiges (on branched covering spaces). We pass from these procedures to definitions; this allows to prove a uniqueness statement in the case of contact branched coverings, and to study the global properties (such as tightness and fillability) of the results of both constructions without relying on any auxiliary choice in the procedures. A second goal allowed by these definitions is to study relations between these constructions and the notions of supporting open book, as introduced by Giroux, and of contact fiber bundle, as introduced by Lerman. For instance, we give a definition of Bourgeois contact structures on flat contact fiber bundles which is local, (strictly) includes the results of the Bourgeois construction, and allows to recover an isotopy class of supporting open books on the fibers. This last point relies on a reinterpretation, inspired by an idea by Giroux, of supporting open books in terms of pairs of contact vector fields.

arXiv commentThe presentation has been improved thanks to a referee's report; version coinciding with the published one. (Comments v2: The preprint has been reworked. Most important changes: Section 4 has been improved, a mistake in the old statements of Theorem G and Corollary H has been rectified, and the form has been ameliorated throughout all the manuscript. 50 pages. Comments v1: 73 pages)

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Cited by in corpus (2)

• Embedding all contact 3-manifolds in a fixed contact 5-manifold
• On properties of Bourgeois contact structures