{ "id": "2209.10823", "version": "v1", "published": "2022-09-22T07:11:14.000Z", "updated": "2022-09-22T07:11:14.000Z", "title": "Sets of full measure avoiding Cantor sets", "authors": [ "Mihail N. Kolountzakis" ], "categories": [ "math.CA" ], "abstract": "In relation to the Erd\\H os similarity problem (show that for any infinite set $A$ of real numbers there exists a set of positive Lebesgue measure which contains no affine copy of $A$) we give some new examples of infinite sets which are not universal in measure, i.e. they satisfy the above conjecture. These are symmetric Cantor sets $C$ which can be quite thin: the length of the $n$-th generation intervals defining the Cantor set is decreasing almost doubly exponentially. Further, we achieve to construct a set, not just of positive measure, but of \\textit{full measure} not containing any affine copy of $C$. Our method is probabilistic.", "revisions": [ { "version": "v1", "updated": "2022-09-22T07:11:14.000Z" } ], "analyses": { "subjects": [ "28A80", "05D40" ], "keywords": [ "full measure avoiding cantor sets", "affine copy", "infinite set", "os similarity problem", "symmetric cantor sets" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }