{ "id": "1304.7797", "version": "v1", "published": "2013-04-29T20:46:18.000Z", "updated": "2013-04-29T20:46:18.000Z", "title": "Definable closure in randomizations", "authors": [ "Uri Andrews", "Isaac Goldbring", "H. Jerome Keisler" ], "comment": "19 pages", "categories": [ "math.LO" ], "abstract": "The randomization of a complete first order theory T is the complete continuous theory T^R with two sorts, a sort for random elements of models of T, and a sort for events in an underlying probability space. We give necessary and sufficient conditions for an element to be definable over a set of parameters in a model of T^R.", "revisions": [ { "version": "v1", "updated": "2013-04-29T20:46:18.000Z" } ], "analyses": { "keywords": [ "definable closure", "randomization", "complete first order theory", "random elements", "complete continuous theory" ], "note": { "typesetting": "TeX", "pages": 19, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013arXiv1304.7797A" } } }