{ "id": "1809.10761", "version": "v1", "published": "2018-09-27T20:52:51.000Z", "updated": "2018-09-27T20:52:51.000Z", "title": "The 1-2-3 Conjecture almost holds for regular graphs", "authors": [ "Jakub PrzybyƂo" ], "comment": "4 pages", "categories": [ "math.CO" ], "abstract": "The well-known 1-2-3 Conjecture asserts that the edges of every graph without isolated edges can be weighted with $1$, $2$ and $3$ so that adjacent vertices receive distinct weighted degrees. This is open in general, while it is known to be possible from the weight set $\\{1,2,3,4,5\\}$. We prove that for regular graphs it is sufficient to use weights $1$, $2$, $3$, $4$.", "revisions": [ { "version": "v1", "updated": "2018-09-27T20:52:51.000Z" } ], "analyses": { "keywords": [ "regular graphs", "vertices receive distinct weighted degrees", "adjacent vertices receive distinct", "weight set", "conjecture asserts" ], "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }