Pappus graph

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• Pappus graph — infobox graph name = Pappus graph image caption = The Pappus graph, a Levi graph with 18 vertices formed from the Pappus configuration. namesake = Pappus of Alexandria vertices = 18 edges = 27 chromatic number = chromatic index = properties =… …   Wikipedia

• Pappus of Alexandria — (Greek polytonic|Πάππος ὁ Ἀλεξανδρεύς) (c. 290 ndash; c. 350) was one of the last great Greek mathematicians of antiquity, known for his Synagoge or Collection (c. 340), and for Pappus s Theorem in projective geometry. Nothing is known of his… …   Wikipedia

• Pappus configuration — In projective geometry, the Pappus configuration consists of a pair (( A , B , C ), ( D , E , F )) of triplets of points, which pair is located either on a pair of lines or on two sides of a conic section, with a hexagon AECDBF defined on the… …   Wikipedia

• Levi graph — infobox graph name = Levi graph image caption = The Pappus graph, a Levi graph with 18 vertices formed from the Pappus configuration. Vertices labeled with single letters correspond to points in the configuration; vertices labeled with three… …   Wikipedia

• Graphe de Pappus — Le graphe de Pappus Nombre de sommets 18 Nombre d arêtes 27 Distribution des degrés 3 régulier Rayon 4 Diamètre …   Wikipédia en Français

• Cubic graph — Not to be confused with graphs of cubic functions. The Petersen graph is a Cubic graph …   Wikipedia

• Crossing number (graph theory) — A drawing of the Heawood graph with three crossings. This is the minimum number of crossings among all drawings of this graph, so the graph has crossing number cr(G) = 3. In graph theory, the crossing number cr(G) of a graph G is the… …   Wikipedia

• Distance-transitive graph — The Biggs Smith graph, the largest 3 regular distance transitive graph. Graph families defined by their automorphisms distance transitive …   Wikipedia

• Desargues graph — Named after Gérard Desargues Vertices 20 Edges 30 …   Wikipedia

• List of mathematics articles (P) — NOTOC P P = NP problem P adic analysis P adic number P adic order P compact group P group P² irreducible P Laplacian P matrix P rep P value P vector P y method Pacific Journal of Mathematics Package merge algorithm Packed storage matrix Packing… …   Wikipedia

• Morley's trisector theorem — In plane geometry, Morley s trisector theorem states that in any triangle, the three points of intersection of the adjacent angle trisectors form an equilateral triangle, called the Morley triangle. The theorem was discovered in 1899 by Anglo… …   Wikipedia