toroidal crossing number

  • 1Toroidal graph — [ A graph (similar to the Heawood graph) embedded on the torus such that no edges cross. ] In mathematics, a graph G is toroidal if it can be embedded on the torus. In other words, the graph s vertices can be placed on a torus such that no edges… …

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  • 2Graphe toroïdal — Un graphe plongé sur le tore de telle façon que les arêtes ne se coupent pas. En mathématiques, et plus précisément en théorie des graphes , un graphe G est toroïdal s il peut être plongé sur le tore, c et à dire que les sommets du graphe peuvent …

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  • 3Möbius–Kantor graph — Named after August Ferdinand Möbius and S. Kantor Vertices 16 …

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  • 4Nauru graph — The Nauru graph is Hamiltonian. Vertices 24 Edges 36 Radius 4 …

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  • 5Heawood graph — infobox graph name = Heawood graph image caption = namesake = Percy John Heawood vertices = 14 edges = 21 girth = 6 chromatic number = 2 chromatic index = 3 properties = Cubic Cage Distance regular ToroidalIn the mathematical field of graph… …

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  • 6Topological graph theory — In mathematics topological graph theory is a branch of graph theory. It studies the embedding of graphs in surfaces, and graphs as topological spaces. [J.L. Gross and T.W. Tucker, Topological graph theory, Wiley Interscience, 1987] Embedding a… …

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  • 7Möbius ladder — Two views of the Möbius ladder M16. In graph theory, the Möbius ladder Mn is a cubic circulant graph with an even number n of vertices, formed from an n cycle by adding edges (called rungs ) connecting opposite pairs of vertices in the cycle. It… …

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  • 8geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …

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  • 9Compact Muon Solenoid — Coordinates: 46°18′34″N 6°4′37″E / 46.30944°N 6.07694°E / 46.30944; 6.07694 …

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  • 10Universe — For other uses, see Universe (disambiguation). Physical cosmology …

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