{ "id": "2205.06155", "version": "v1", "published": "2022-05-12T15:26:46.000Z", "updated": "2022-05-12T15:26:46.000Z", "title": "Pro-$p$ completions of $PD_n$-groups", "authors": [ "Jonathan Hillman", "Dessislava H. Kochloukova" ], "comment": "Some of the results of the final section are based on arXiv 1305.3953 [math.GT]", "categories": [ "math.GT", "math.GR" ], "abstract": "We sharpen earlier work on the pro-$p$ completions of orientable $PD_3$-groups. There are four cases, and we give examples of aspherical 3-manifolds representing each case. In three of the four cases the new results are best possible. We also consider the pro-$p$ completion of some orientable $PD_n$ groups for $n \\leq 5$, including surface-by-surface groups.", "revisions": [ { "version": "v1", "updated": "2022-05-12T15:26:46.000Z" } ], "analyses": { "keywords": [ "completion", "sharpen earlier work", "surface-by-surface groups" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }