{ "id": "1209.4581", "version": "v2", "published": "2012-09-20T16:44:00.000Z", "updated": "2012-12-10T20:31:21.000Z", "title": "On unit weighing matrices with small weight", "authors": [ "Darcy Best", "Hadi Kharaghani", "Hugh Ramp" ], "categories": [ "math.CO" ], "abstract": "We study the structure of unit weighing matrices of order n and weights 2, 3 and 4. We show that the number of inequivalent unit weighing matrices UW(n,4) depends on the number of decompositions of n into sums of non-negative multiples of some specific positive integers. We also show two interesting sporadic cases in order to show the complexities involved for weights larger than 4.", "revisions": [ { "version": "v2", "updated": "2012-12-10T20:31:21.000Z" } ], "analyses": { "keywords": [ "small weight", "inequivalent unit weighing matrices uw", "weights larger", "specific positive integers", "interesting sporadic cases" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1209.4581B" } } }