{ "id": "1902.03822", "version": "v1", "published": "2019-02-11T11:25:44.000Z", "updated": "2019-02-11T11:25:44.000Z", "title": "Undecidability of the word problem for one-relator inverse monoids via right-angled Artin subgroups of one-relator groups", "authors": [ "Robert D. Gray" ], "comment": "18 pages", "categories": [ "math.GR" ], "abstract": "We prove the following results: (1) There is a one-relator inverse monoid $\\mathrm{Inv}\\langle A\\:|\\:w=1 \\rangle$ with undecidable word problem; and (2) There are one-relator groups with undecidable submonoid membership problem. The first of these results answers a problem originally posed by Margolis, Meakin and Stephen in 1987.", "revisions": [ { "version": "v1", "updated": "2019-02-11T11:25:44.000Z" } ], "analyses": { "subjects": [ "20F10", "20F05", "20M05", "20M18", "20F36" ], "keywords": [ "one-relator inverse monoid", "right-angled artin subgroups", "one-relator groups", "undecidability", "undecidable submonoid membership problem" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable" } } }