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On the infinite loop space structure of the cobordism category

Hoang Kim Nguyen
Algebraic & Geometric Topology 17 (2017) 1021–1040
DOI: 10.2140/agt.2017.17.1021
Abstract

We show an equivalence of infinite loop spaces between the classifying space of the cobordism category with infinite loop space structure induced by taking disjoint union of manifolds and the infinite loop space associated to the Madsen–Tillmann spectrum.

Keywords
cobordism category, Madsen–Tillmann spectrum
Mathematical Subject Classification 2010
Primary: 55P47, 57R56
Secondary: 57R90
References
Publication
Received: 21 December 2015
Revised: 1 July 2016
Accepted: 22 July 2016
Published: 14 March 2017
Authors
Hoang Kim Nguyen
Fakultät für Mathematik
Universität Regensburg
D-93040 Regensburg
Germany