{ "id": "1709.05152", "version": "v1", "published": "2017-09-15T11:06:21.000Z", "updated": "2017-09-15T11:06:21.000Z", "title": "Locating-Dominating Sets of Functigraphs", "authors": [ "Muhammad Murtaza", "Muhammad Fazil", "Imran Javaid", "Hira Benish" ], "comment": "14 pages, 3 figures", "categories": [ "math.CO" ], "abstract": "A locating-dominating set of a graph $G$ is a dominating set of $G$ such that every vertex of $G$ outside the dominating set is uniquely identified by its neighborhood within the dominating set. The location-domination number of $G$ is the minimum cardinality of a locating-dominating set in $G$. Let $G_{1}$ and $G_{2}$ be the disjoint copies of a graph $G$ and $f:V(G_{1})\\rightarrow V(G_{2})$ be a function. A functigraph $F^f_{G}$ consists of the vertex set $V(G_{1})\\cup V(G_{2})$ and the edge set $E(G_{1})\\cup E(G_{2})\\cup \\{uv:v=f(u)\\}$. In this paper, we study the variation of the location-domination number in passing from $G$ to $F^f_{G}$ and find its sharp lower and upper bounds. We also study the location-domination number of functigraphs of the complete graphs for all possible definitions of the function $f$. We also obtain the location-domination number of functigraphs of a family of spanning subgraph of the complete graphs.", "revisions": [ { "version": "v1", "updated": "2017-09-15T11:06:21.000Z" } ], "analyses": { "subjects": [ "05C69", "05C12" ], "keywords": [ "locating-dominating set", "location-domination number", "functigraph", "complete graphs", "vertex set" ], "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable" } } }