{ "id": "1901.06429", "version": "v1", "published": "2019-01-18T22:05:22.000Z", "updated": "2019-01-18T22:05:22.000Z", "title": "On Sets Containing an Affine Copy of Bounded Decreasing Sequences", "authors": [ "Tongou Yang" ], "categories": [ "math.CA" ], "abstract": "How small can a set be while containing many configurations? Following up on earlier work of Erd\\\"os and Kakutani \\cite{MR0089886}, Math\\'e \\cite{MR2822418} and M\\\"olter and Yavicoli \\cite{Molter}, we address the question in two directions. On one hand, if a subset of the real numbers contains an affine copy of all bounded decreasing sequences, then we show that such subset must be somewhere dense. On the other hand, given a collection of convergent sequences with prescribed decay, there is a closed and nowhere dense subset of the reals that contains an affine copy of every sequence in that collection.", "revisions": [ { "version": "v1", "updated": "2019-01-18T22:05:22.000Z" } ], "analyses": { "subjects": [ "11B05", "28A78", "28A12", "28A80" ], "keywords": [ "bounded decreasing sequences", "affine copy", "sets containing", "real numbers contains", "earlier work" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }