{ "id": "0705.4444", "version": "v3", "published": "2007-05-30T18:10:01.000Z", "updated": "2009-03-11T18:23:01.000Z", "title": "Deformations of asymptotically cylindrical G_2 manifolds", "authors": [ "Johannes Nordström" ], "comment": "31 pages, corrected proof of proposition 6.23", "journal": "Math. Proc. Camb. Phil. Soc. 145 (2008) 311-348", "doi": "10.1017/S0305004108001333", "categories": [ "math.DG" ], "abstract": "We prove that for a 7-dimensional manifold M with cylindrical ends the moduli space of exponentially asymptotically cylindrical torsion-free G_2 structures is a smooth manifold (if non-empty), and study some of its local properties. We also show that the holonomy of the induced metric of an exponentially asymptotically cylindrical G_2 manifold M is exactly G_2 if and only if its fundamental group is finite and neither M nor any double cover of M is homeomorphic to a cylinder.", "revisions": [ { "version": "v3", "updated": "2009-03-11T18:23:01.000Z" } ], "analyses": { "subjects": [ "53C25" ], "keywords": [ "deformations", "moduli space", "smooth manifold", "local properties", "fundamental group" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 31, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007arXiv0705.4444N" } } }