{ "id": "0705.0938", "version": "v1", "published": "2007-05-07T16:16:12.000Z", "updated": "2007-05-07T16:16:12.000Z", "title": "Extremal Graph Theory for Metric Dimension and Diameter", "authors": [ "Carmen Hernando", "Merce Mora", "Ignacio M. Pelayo", "Carlos Seara", "David R. Wood" ], "journal": "Electronic J. Combinatorics 17.1:R30, 2010", "categories": [ "math.CO" ], "abstract": "A set of vertices $S$ \\emph{resolves} a connected graph $G$ if every vertex is uniquely determined by its vector of distances to the vertices in $S$. The \\emph{metric dimension} of $G$ is the minimum cardinality of a resolving set of $G$. Let $\\mathcal{G}_{\\beta,D}$ be the set of graphs with metric dimension $\\beta$ and diameter $D$. It is well-known that the minimum order of a graph in $\\mathcal{G}_{\\beta,D}$ is exactly $\\beta+D$. The first contribution of this paper is to characterise the graphs in $\\mathcal{G}_{\\beta,D}$ with order $\\beta+D$ for all values of $\\beta$ and $D$. Such a characterisation was previously only known for $D\\leq2$ or $\\beta\\leq1$. The second contribution is to determine the maximum order of a graph in $\\mathcal{G}_{\\beta,D}$ for all values of $D$ and $\\beta$. Only a weak upper bound was previously known.", "revisions": [ { "version": "v1", "updated": "2007-05-07T16:16:12.000Z" } ], "analyses": { "subjects": [ "05C12", "05C35" ], "keywords": [ "extremal graph theory", "metric dimension", "weak upper bound", "minimum order", "first contribution" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007arXiv0705.0938H" } } }