{ "id": "1205.5981", "version": "v1", "published": "2012-05-27T15:55:16.000Z", "updated": "2012-05-27T15:55:16.000Z", "title": "On the canonical base property", "authors": [ "Ehud Hrushovski", "Daniel Palacin", "Anand Pillay" ], "comment": "15 pages", "categories": [ "math.LO" ], "abstract": "We give an example of a finite rank, in fact aleph-1 categorical theory where the CBP (canonical base property) does not hold. We include a \"group-like\" example. We also prove, in a finite Morley rank context, if all definable Galois groups are \"rigid\" then the theory has the CBP (in a strong sense).", "revisions": [ { "version": "v1", "updated": "2012-05-27T15:55:16.000Z" } ], "analyses": { "subjects": [ "03C45" ], "keywords": [ "canonical base property", "finite morley rank context", "strong sense", "finite rank", "definable galois groups" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1205.5981H" } } }