: Mathématiques: Levi graph

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algebra > combinatorics > Levi graph

Levi graph

In combinatorial mathematics, a Levi graph or incidence graph is a bipartite graph associated with an incidence structure. From a collection of points and lines in an incidence geometry or a projective configuration, we form a graph with one vertex per point, one vertex per line, and an edge for every incidence between a point and a line. They are named for Friedrich Wilhelm Levi, who wrote about them in 1942.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Levi_graph)

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