{ "id": "1806.02357", "version": "v1", "published": "2018-06-06T18:00:13.000Z", "updated": "2018-06-06T18:00:13.000Z", "title": "Complex hypersurfaces in a direct product of Riemann surfaces", "authors": [ "Claudio Llosa Isenrich" ], "comment": "15 pages", "categories": [ "math.GT", "math.AG", "math.GR" ], "abstract": "We study smooth complex hypersurfaces in a direct product of closed hyperbolic Riemann surfaces and give a classification in terms of their fundamental group. This answers a question of Delzant and Gromov on subvarieties of products of Riemann surfaces in the smooth codimension one case. We also answer Delzant and Gromov's question of which subgroups of a direct product of surface groups are K\\\"ahler for two classes: subdirect products of three surface groups; and subgroups arising as kernel of a homomorphism from the product of surface groups to $\\mathbb{Z}^3$.", "revisions": [ { "version": "v1", "updated": "2018-06-06T18:00:13.000Z" } ], "analyses": { "subjects": [ "32J27", "32Q15", "20F65", "20J05" ], "keywords": [ "surface groups", "study smooth complex hypersurfaces", "closed hyperbolic riemann surfaces", "subdirect products", "fundamental group" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }