{ "id": "1502.00694", "version": "v1", "published": "2015-02-03T00:47:57.000Z", "updated": "2015-02-03T00:47:57.000Z", "title": "Lusin-type theorems for Cheeger derivatives on metric measure spaces", "authors": [ "Guy C. David" ], "comment": "16 pages. Comments welcome", "categories": [ "math.CA", "math.MG" ], "abstract": "A theorem of Lusin states that every Borel function on $R$ is equal almost everywhere to the derivative of a continuous function. This result was later generalized to $R^n$ in works of Alberti and Moonens-Pfeffer. In this note, we prove direct analogs of these results on a large class of metric measure spaces, those with doubling measures and Poincar\\'e inequalities, which admit a form of differentiation by a famous theorem of Cheeger.", "revisions": [ { "version": "v1", "updated": "2015-02-03T00:47:57.000Z" } ], "analyses": { "subjects": [ "26B05", "30L99" ], "keywords": [ "metric measure spaces", "cheeger derivatives", "lusin-type theorems", "borel function", "lusin states" ], "note": { "typesetting": "TeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150200694D" } } }