{"version":"1.0","type":"link","title":"Critical graph - Newikis","description":"In graph theory, a critical graph is an undirected graph all of whose proper subgraphs have smaller chromatic number. In such a graph, every vertex or edge is a critical element, in the sense that its deletion would decrease the number of colors needed in a graph coloring of the given graph. Each…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/a/a8/Critical_graph_sample.svg/1280px-Critical_graph_sample.svg.png","thumbnail_width":1280,"thumbnail_height":1280}