diameter


Average diameter of a bounded cell of a simple arrangement ★★

Author(s): Deza; Terlaky; Zinchenko

Conjecture   The average diameter of a bounded cell of a simple arrangement defined by $ n $ hyperplanes in dimension $ d $ is not greater than $ d $.

Keywords: arrangement; diameter; polytope

Hirsch Conjecture ★★★

Author(s): Hirsch

Conjecture   Let $ P $ be a convex $ d $-polytope with $ n $ facets. Then the diameter of the graph of the polytope $ P $ is at most $ n-d $.

Keywords: diameter; polytope

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