{ "id": "1201.0791", "version": "v1", "published": "2012-01-04T00:28:31.000Z", "updated": "2012-01-04T00:28:31.000Z", "title": "On the local and global classification of generalized complex structures", "authors": [ "Michael Bailey" ], "comment": "112 pages, thesis", "categories": [ "math.DG", "math.SG" ], "abstract": "We study a number of local and global classification problems in generalized complex geometry. In the first topic, we characterize the local structure of generalized complex manifolds by proving that a generalized complex structure near a complex point arises from a holomorphic Poisson structure. In the proof we use a smoothed Newton's method along the lines of Nash, Moser and Conn. In the second topic, we consider whether a given regular Poisson structure and transverse complex structure come from a generalized complex structure. We give cohomological criteria, and we find some counterexamples and some unexpected examples, including a compact, regular generalized complex manifold for which nearby symplectic leaves are not symplectomorphic. In the third topic, we consider generalized complex structures with nondegenerate type change; we describe a generalized Calabi-Yau structure induced on the type change locus, and prove a local normal form theorem near this locus. Finally, in the fourth topic, we give a classification of generalized complex principal bundles satisfying a certain transversality condition; in this case, there is a generalized flat connection, and the classification involves a monodromy map to the Courant automorphism group.", "revisions": [ { "version": "v1", "updated": "2012-01-04T00:28:31.000Z" } ], "analyses": { "subjects": [ "53D18" ], "keywords": [ "generalized complex structure", "global classification", "complex principal bundles satisfying", "generalized complex manifold", "transverse complex structure come" ], "tags": [ "dissertation" ], "note": { "typesetting": "TeX", "pages": 112, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1201.0791B" } } }