{ "id": "0809.4621", "version": "v2", "published": "2008-09-26T13:11:56.000Z", "updated": "2008-11-22T14:59:14.000Z", "title": "Explicit constructions of infinite families of MSTD sets", "authors": [ "Steven J. Miller", "Brooke Orosz", "Daniel Scheinerman" ], "comment": "Version 2: 14 pages, 1 figure. Includes extensions to ternary forms and a conjecture for general combinations of the form Sum_i epsilon_i A with epsilon_i in {-1,1} (would be a theorem if we could find a set to start the induction in general)", "journal": "Journal of Number Theory 130 (2010) 1221--1233", "doi": "10.1016/j.jnt.2009.09.003", "categories": [ "math.NT" ], "abstract": "We explicitly construct infinite families of MSTD (more sums than differences) sets. There are enough of these sets to prove that there exists a constant C such that at least C / r^4 of the 2^r subsets of {1,...,r} are MSTD sets; thus our family is significantly denser than previous constructions (whose densities are at most f(r)/2^{r/2} for some polynomial f(r)). We conclude by generalizing our method to compare linear forms epsilon_1 A + ... + epsilon_n A with epsilon_i in {-1,1}.", "revisions": [ { "version": "v2", "updated": "2008-11-22T14:59:14.000Z" } ], "analyses": { "subjects": [ "11P99", "11K99" ], "keywords": [ "mstd sets", "explicit constructions", "compare linear forms", "explicitly construct infinite families", "significantly denser" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0809.4621M" } } }