{ "id": "2104.07416", "version": "v1", "published": "2021-04-15T12:29:52.000Z", "updated": "2021-04-15T12:29:52.000Z", "title": "On clique numbers of colored mixed graphs", "authors": [ "Dipayan Chakraborty", "Sandip Das", "Soumen Nandi", "Debdeep Roy", "Sagnik Sen" ], "categories": [ "math.CO", "cs.DM" ], "abstract": "An (m,n)-colored mixed graph, or simply, an (m,n)-graph is a graph having m different types of arcs and n different types of edges. A homomorphism of an (m,n)-graph G to another (m,n)-graph H is a vertex mapping that preserves adjacency, the type thereto and the direction. A subset R of the set of vertices of G that always maps distinct vertices in itself to distinct image vertices under any homomorphism is called an (m,n)-relative clique of G. The maximum cardinality of an (m,n)-relative clique of a graph is called the (m,n)-relative clique number of the graph. In this article, we explore the (m,n)-relative clique numbers for various families of graphs.", "revisions": [ { "version": "v1", "updated": "2021-04-15T12:29:52.000Z" } ], "analyses": { "keywords": [ "clique number", "colored mixed graphs", "maps distinct vertices", "distinct image vertices", "preserves adjacency" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }