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Complete graph

Graph in which every two vertices are adjacent / From Wikipedia, the free encyclopedia

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In the mathematical field of graph theory, a complete graph is a simple undirected graph in which every pair of distinct vertices is connected by a unique edge. A complete digraph is a directed graph in which every pair of distinct vertices is connected by a pair of unique edges (one in each direction).[1]

Quick facts: Complete graph, Vertices, Edges, Radius, Diam...
Complete graph
Complete_graph_K7.svg
K7, a complete graph with 7 vertices
Verticesn
Edges
Radius
Diameter
Girth
Automorphismsn! (Sn)
Chromatic numbern
Chromatic index
  • n if n is odd
  • n − 1 if n is even
Spectrum
Properties
NotationKn
Table of graphs and parameters
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Graph theory itself is typically dated as beginning with Leonhard Euler's 1736 work on the Seven Bridges of Königsberg. However, drawings of complete graphs, with their vertices placed on the points of a regular polygon, had already appeared in the 13th century, in the work of Ramon Llull.[2] Such a drawing is sometimes referred to as a mystic rose.[3]

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