{ "id": "2308.00266", "version": "v1", "published": "2023-08-01T04:00:25.000Z", "updated": "2023-08-01T04:00:25.000Z", "title": "Profinite rigidity and hyperbolic four-punctured sphere bundles over the circle", "authors": [ "Tamunonye Cheetham-West" ], "comment": "8 pages, 1 figure", "categories": [ "math.GT", "math.GR" ], "abstract": "We show that hyperbolic four-punctured $S^2-$bundles over $S^1$ are distinguished by the finite quotients of their fundamental groups among all 3-manifold groups. To do this, we upgrade a result of Liu to show that the topological type of a fiber is detected by the profinite completion of the fundamental group of a fibered 3-manifold.", "revisions": [ { "version": "v1", "updated": "2023-08-01T04:00:25.000Z" } ], "analyses": { "subjects": [ "57K32", "20E18", "57K20" ], "keywords": [ "hyperbolic four-punctured sphere bundles", "profinite rigidity", "fundamental group", "finite quotients", "profinite completion" ], "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable" } } }