{ "id": "1208.3370", "version": "v1", "published": "2012-08-16T13:54:02.000Z", "updated": "2012-08-16T13:54:02.000Z", "title": "A geometric interpretation of the homotopy groups of the cobordism category", "authors": [ "Marcel Bökstedt", "Anne Marie Svane" ], "comment": "23 pages", "doi": "10.1093/qmath/hau011", "categories": [ "math.AT" ], "abstract": "The classifying space of the embedded cobordism category has been identified in by Galatius, Tillmann, Madsen, and Weiss as the infinite loop space of a certain Thom spectrum. This identifies the set of path components with the classical cobordism group. In this paper, we give a geometric interpretation of the higher homotopy groups as certain cobordism groups where all manifolds are now equipped with a set of orthonormal sections in the tangent bundle. We also give a description of the fundamental group as a free group with a set of geometrically intuitive relations.", "revisions": [ { "version": "v1", "updated": "2012-08-16T13:54:02.000Z" } ], "analyses": { "subjects": [ "57R90" ], "keywords": [ "geometric interpretation", "higher homotopy groups", "infinite loop space", "embedded cobordism category", "path components" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 23, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1208.3370B" } } }