{ "id": "1805.10083", "version": "v1", "published": "2018-05-25T11:14:31.000Z", "updated": "2018-05-25T11:14:31.000Z", "title": "Further results on the radio number of trees", "authors": [ "Devsi Bantva" ], "comment": "7 Pages, CTGTC 2016 conference proceedings paper", "journal": "Electronic Notes in Discrete Mathematics, Volume 63, Pages 85-91, 2017", "doi": "10.1016/j.endm.2017.11.002", "categories": [ "math.CO" ], "abstract": "Let $G$ be a finite, connected, undirected graph with diameter $diam(G)$ and $d(u,v)$ denote the distance between $u$ and $v$ in $G$. A radio labeling of a graph $G$ is a mapping $f: V(G) \\rightarrow \\{0,1,2,...\\}$ such that $|f(u)-f(v)| \\geq diam(G) + 1 - d(u,v)$ for every pair of distinct vertices $u, v$ of $G$. The radio number of $G$, denoted by $rn(G)$, is the smallest integer $k$ such that $G$ has a radio labeling $f$ with $\\max\\{f(v) : v \\in V(G)\\} = k$. In this paper, we determine the radio number for three families of trees obtained by taking graph operation on a given tree or a family of trees.", "revisions": [ { "version": "v1", "updated": "2018-05-25T11:14:31.000Z" } ], "analyses": { "subjects": [ "05C15", "05C78" ], "keywords": [ "radio number", "radio labeling", "distinct vertices", "smallest integer", "graph operation" ], "tags": [ "conference paper", "journal article" ], "publication": { "publisher": "Elsevier" }, "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable" } } }