Cobordism categories of manifolds with corners

Details Cobordism categories of manifolds with corners Cobordism categories of manifolds with corners

2008-10-03

arxiv.org/abs/0810.0581v1

Mathematics

Algebraic Topology

43 pages, 6 figures

Scientific paper

In this paper we study the topology of cobordism categories of manifolds with corners. Specifically, if {Cob}_{d,} is the category whose objets are a fixed dimension d, with corners of codimension less than or equal to k, then we identify the homotopy type of the classifying space B{Cob}_{d,} as the zero space of a homotopy colimit of certain diagram of Thom spectra. We also identify the homotopy type of the corresponding cobordism category when extra tangential structure is assumed on the manifolds. These results generalize the results of Galatius, Madsen, Tillmann and Weiss, and the proofs are an adaptation of the their methods. As an application we describe the homotopy type of the category of open and closed strings with a background space X, as well as its higher dimensional analogues. This generalizes work of Baas-Cohen-Ramirez and Hanbury.

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