{ "id": "1811.03008", "version": "v1", "published": "2018-11-07T17:03:08.000Z", "updated": "2018-11-07T17:03:08.000Z", "title": "Limit points of normalized prime gaps", "authors": [ "Jori Merikoski" ], "categories": [ "math.NT" ], "abstract": "We show that at least 1/3 of positive real numbers are in the set of limit points of normalized prime gaps. More precisely, if $p_n$ denotes the $n$th prime and $\\mathbb{L}$ is the set of limit points of the sequence $\\{(p_{n+1}-p_n)/\\log p_n\\}_{n=1}^\\infty,$ then for all $T\\geq 0$ the Lebesque measure of $\\mathbb{L} \\cap [0,T]$ is at least $T/3.$ This improves the result of Pintz (2015) that the Lebesque measure of $\\mathbb{L} \\cap [0,T]$ is at least $(1/4-o(1))T,$ which was obtained by a refinement of the previous ideas of Banks, Freiberg, and Maynard (2015). Our improvement comes from using Chen's sieve to give, for a certain sum over prime pairs, a better upper bound than what can be obtained using Selberg's sieve. Even though this improvement is small, a modification of the arguments Pintz and Banks, Freiberg, and Maynard shows that this is sufficient. In addition, we show that there exists a constant $C$ such that for all $T \\geq 0$ we have $\\mathbb{L} \\cap [T,T+C] \\neq \\emptyset,$ that is, gaps between limit points are bounded by an absolute constant.", "revisions": [ { "version": "v1", "updated": "2018-11-07T17:03:08.000Z" } ], "analyses": { "keywords": [ "normalized prime gaps", "limit points", "lebesque measure", "better upper bound", "arguments pintz" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }