{ "id": "1012.0109", "version": "v2", "published": "2010-12-01T06:44:42.000Z", "updated": "2010-12-18T12:01:42.000Z", "title": "New Constructions of Complex Manifolds", "authors": [ "Jinxing Xu" ], "comment": "26 pages", "categories": [ "math.AG", "math.DG" ], "abstract": "For a generic anti-canonical hypersurface in each smooth toric Fano 4-fold with rank 2 Picard group, we prove there exist three isolated rational curves in it. Moreover, for all these 4-folds except one, the contractions of generic anti-canonical hypersurfaces along the three rational curves can be deformed to smooth threefolds diffeomorphic to connected sums of S^{3} \\times S^{3}. In this manner, we obtain complex structures with trivial canonical bundles on some connected sums of S^{3} \\times S^{3}. This construction is an analogue of that in Friedman [7], Lu and Tian [12] which used only quintics in P^{4}.", "revisions": [ { "version": "v2", "updated": "2010-12-18T12:01:42.000Z" } ], "analyses": { "keywords": [ "complex manifolds", "generic anti-canonical hypersurface", "construction", "smooth toric fano", "connected sums" ], "note": { "typesetting": "TeX", "pages": 26, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1012.0109X" } } }