{ "id": "2108.06804", "version": "v1", "published": "2021-08-15T19:49:52.000Z", "updated": "2021-08-15T19:49:52.000Z", "title": "On a question of Mendès France on normal numbers", "authors": [ "Verónica Becher", "Manfred G. Madritsch" ], "comment": "15 pages", "categories": [ "math.NT" ], "abstract": "In 2008 or earlier, Michel Mend\\`es France asked for an instance of a real number $x$ such that both $x$ and $1/x$ are simply normal to a given integer base $b$. We give a positive answer to this question by constructing a number $x$ such that both $x$ and its reciprocal $1/x$ are continued fraction normal as well as normal to all integer bases greater than or equal to $2$. Moreover, $x$ and $1/x$ are both computable.", "revisions": [ { "version": "v1", "updated": "2021-08-15T19:49:52.000Z" } ], "analyses": { "subjects": [ "11K16", "11J70" ], "keywords": [ "mendès france", "normal numbers", "integer bases greater", "continued fraction normal", "real number" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }