{ "id": "1510.07291", "version": "v1", "published": "2015-10-25T19:15:21.000Z", "updated": "2015-10-25T19:15:21.000Z", "title": "On the Topology of Metric Spaces definable in o-minimal expansions of fields", "authors": [ "Erik Walsberg" ], "categories": [ "math.LO" ], "abstract": "We study the topology of metric spaces which are definable in o-minimal expansions of ordered fields. We show that a definable metric space either contains an infinite definable discrete set or is definably homeomorphic to a definable set equipped with its euclidean topology. This implies that a separable metric space which is definable in an o-minimal expansion of the real field is definably homeomorphic to a definable set equipped with its euclidean topology. We show that almost every point in a definable metric space has a neighborhood which is definably homeomorphic to an open definable subset of euclidean space.", "revisions": [ { "version": "v1", "updated": "2015-10-25T19:15:21.000Z" } ], "analyses": { "keywords": [ "o-minimal expansion", "metric spaces definable", "definable metric space", "definably homeomorphic", "euclidean topology" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv151007291W" } } }