On representations by contact and intersection of segments

De Fraysseix, Hubert and Ossona de Mendez, Patrice (2007) On representations by contact and intersection of segments. [Journal (Paginated)]

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Abstract

A necessary and sufficient condition is given for a connected bipartite graph to be the incidence graph of a contact family of segments and points. We deduce that any 4-connected 3-colorable plane graph is the contact graph of a family of segments and that any 4-colored planar graph without an induced C4 using 4 colors is the intersection graph of a family of straight line segments.

Item Type: Journal (Paginated)
Additional Information: 10.1007/s00453-006-0157-x
Classifications: Z Theory > Z.500 Representations
M Methods > M.999 Others
P Styles > P.999 Others
Z Theory > Z.250 Geometry
URI: http://gdea.informatik.uni-koeln.de/id/eprint/750

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