{ "id": "0803.1749", "version": "v1", "published": "2008-03-12T11:24:26.000Z", "updated": "2008-03-12T11:24:26.000Z", "title": "An isomorphism between the completion of an Algebra and its Caratheodory Extension", "authors": [ "Jun Tanaka" ], "comment": "5 pages", "categories": [ "math.FA" ], "abstract": "Let $\\Omega$ denote an algebra of sets and $\\mu$ a $\\sigma$-finite measure. We then prove that the completion of $\\Omega$ under the pseudometric $d(A,B)$ = $\\mu^{\\ast}(A \\triangle B)$ is $\\sigma$-algebra isomorphic and isometric to the Caratheodory Extension of $\\Omega$ under the equivalence relation $\\sim$.", "revisions": [ { "version": "v1", "updated": "2008-03-12T11:24:26.000Z" } ], "analyses": { "subjects": [ "28A12", "28B20" ], "keywords": [ "caratheodory extension", "completion", "isomorphism", "equivalence relation" ], "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0803.1749T" } } }