Mathematics – Symplectic Geometry
Scientific paper
2004-04-14
Mathematics
Symplectic Geometry
10 pages, 3 figures. Proof that overtwisted contact structures are supported by open books is corrected. Various improvements
Scientific paper
In this note we observe that while all overtwisted contact structures on
compact 3--manifolds are supported by planar open book decompositions, not all
contact structures are. This has relevance to invariants of contact structures
and also to the Weinstein conjecture via work of Abbas Cieliebak and Hofer.
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