{ "id": "1905.00533", "version": "v1", "published": "2019-05-02T00:06:02.000Z", "updated": "2019-05-02T00:06:02.000Z", "title": "Cardinality of a floor function", "authors": [ "Randell Heyman" ], "comment": "9 pages. Comments welcome", "categories": [ "math.NT" ], "abstract": "Fix a positive integer X. We quantify the cardinality of the set $\\{\\lfloor X/n \\rfloor\\}_{n=1}^X$. We discuss restricting the set to those elements that are prime, semiprime or similar.", "revisions": [ { "version": "v1", "updated": "2019-05-02T00:06:02.000Z" } ], "analyses": { "subjects": [ "11A25", "11A41" ], "keywords": [ "floor function", "cardinality", "positive integer" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }