{ "id": "1204.4514", "version": "v1", "published": "2012-04-20T01:50:58.000Z", "updated": "2012-04-20T01:50:58.000Z", "title": "The 2-Domination and 2-Bondage Numbers of Grid Graphs", "authors": [ "You Lu", "Jun-Ming Xu" ], "categories": [ "math.CO" ], "abstract": "Let $p$ be a positive integer and $G=(V,E)$ be a simple graph. A subset $D\\subseteq V$ is a $p$-dominating set if each vertex not in $D$ has at least $p$ neighbors in $D$. The $p$-domination number $\\g_p(G)$ is the minimum cardinality among all $p$-dominating sets of $G$. The $p$-bondage number $b_p(G)$ is the cardinality of a smallest set of edges whose removal from $G$ results in a graph with a $p$-domination number greater than the $p$-domination number of $G$. In this note we determine the 2-domination number $\\g_2$ and 2-bondage number $b_2$ for the grid graphs $G_{m,n}=P_m\\times P_n$ for $2\\leq m\\leq 4$.", "revisions": [ { "version": "v1", "updated": "2012-04-20T01:50:58.000Z" } ], "analyses": { "keywords": [ "grid graphs", "dominating set", "domination number greater", "simple graph", "minimum cardinality" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1204.4514L" } } }