{ "id": "math/0602482", "version": "v1", "published": "2006-02-22T02:41:15.000Z", "updated": "2006-02-22T02:41:15.000Z", "title": "Degrees of rigidity for Souslin trees", "authors": [ "Joel David Hamkins", "Gunter Fuchs" ], "comment": "33 pages", "categories": [ "math.LO" ], "abstract": "We investigate various strong notions of rigidity for Souslin trees, separating them under Diamond into a hierarchy. Applying our methods to the automorphism tower problem in group theory, we show under Diamond that there is a group whose automorphism tower is highly malleable by forcing.", "revisions": [ { "version": "v1", "updated": "2006-02-22T02:41:15.000Z" } ], "analyses": { "subjects": [ "03E05" ], "keywords": [ "souslin trees", "automorphism tower problem", "strong notions", "group theory" ], "note": { "typesetting": "TeX", "pages": 33, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......2482H" } } }