Two signed associahedra.
Burgiel, H., Reiner, V. (1998)
The New York Journal of Mathematics [electronic only]
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Displaying similar documents to “Vertex-facet incidences of unbounded polyhedra.”
Two signed associahedra.
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Combinatorial lemmas for polyhedrons I
Adam Idzik, Konstanty Junosza-Szaniawski (2006)
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We formulate general boundary conditions for a labelling of vertices of a triangulation of a polyhedron by vectors to assure the existence of a balanced simplex. The condition is not for each vertex separately, but for a set of vertices of each boundary simplex. This allows us to formulate a theorem, which is more general than the Sperner lemma and theorems of Shapley; Idzik and Junosza-Szaniawski; van der Laan, Talman and Yang. A generalization of the Poincaré-Miranda theorem is also...
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