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The complete graph on n vertices is denoted by K n.Some sources claim that the letter K in this notation stands for the German word komplett, [4] but the German name for a complete graph, vollständiger Graph, does not contain the letter K, and other sources state that the notation honors the contributions of Kazimierz Kuratowski to graph theory.
The complete list of all trees on 2,3,4 labeled vertices: = tree with 2 vertices, = trees with 3 vertices and = trees with 4 vertices. In mathematics, Cayley's formula is a result in graph theory named after Arthur Cayley.
Regular complex polygons of the form 2{4}p have complete bipartite graphs with 2p vertices (red and blue) and p 2 2-edges. They also can also be drawn as p edge-colorings. Given a bipartite graph, testing whether it contains a complete bipartite subgraph K i , i for a parameter i is an NP-complete problem.
A complete bipartite graph with m = 5 and n = 3 The Heawood graph is bipartite.. In the mathematical field of graph theory, a bipartite graph (or bigraph) is a graph whose vertices can be divided into two disjoint and independent sets and , that is, every edge connects a vertex in to one in .
The 11 light blue triangles form maximal cliques. The two dark blue 4-cliques are both maximum and maximal, and the clique number of the graph is 4. In graph theory, a clique (/ ˈ k l iː k / or / ˈ k l ɪ k /) is a subset of vertices of an undirected graph such that every two distinct vertices in the clique are adjacent.
In particular, a complete graph with n vertices, denoted K n, has no vertex cuts at all, but κ(K n) = n − 1. A vertex cut for two vertices u and v is a set of vertices whose removal from the graph disconnects u and v. The local connectivity κ(u, v) is the size of a smallest vertex cut separating u and v.
Equivalently, a tournament is a complete asymmetric relation. [2] [3] The name tournament comes from interpreting the graph as the outcome of a round-robin tournament, a game where each player is paired against every other exactly once. In a tournament, the vertices represent the players, and the edges between players point from the winner to ...
For the notation for complete graphs, complete bipartite graphs, and complete multipartite graphs, see complete. κ κ(G) (using the Greek letter kappa) can refer to the vertex connectivity of G or to the clique number of G. kernel A kernel of a directed graph is a set of vertices which is both stable and absorbing. knot