{ "id": "0801.0170", "version": "v1", "published": "2007-12-30T23:00:03.000Z", "updated": "2007-12-30T23:00:03.000Z", "title": "Orders of $π$-bases", "authors": [ "Isaac Gorelic" ], "comment": "11 pages", "categories": [ "math.GN", "math.LO" ], "abstract": "We extend the scope of B. Shapirovskii's results [B.E Shapirovskii, \"Cardinal invariants in Compact Hausdorff Spaces,\" Amer. Math. Soc. Transl. (2) Vol. 134, 1987, pp. 93-118] on the order of $\\pi$-bases in compact spaces and answer some questions of V. Tkachuk in [V.V. Tkachuk, \"Point-countable pi-bases in first-countable and similar spaces,\" Fund. Math. 186 (2005), pp.55-69].", "revisions": [ { "version": "v1", "updated": "2007-12-30T23:00:03.000Z" } ], "analyses": { "subjects": [ "54A25", "03E10", "03E75", "54A35" ], "keywords": [ "compact hausdorff spaces", "similar spaces", "shapirovskiis results", "cardinal invariants", "compact spaces" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0801.0170G" } } }