Existence and classification of overtwisted contact structures in all dimensions
arXiv:1404.6157
Abstract
We establish a parametric extension -principle for overtwisted contact structures on manifolds of all dimensions, which is the direct generalization of the -dimensional result from \cite{Eli89}. It implies, in particular, that any closed manifold admits a contact structure in any given homotopy class of almost contact structures.
86 pages, 16 figures