Carathéodory, Helly and the others in the max-plus world

Details Carathéodory, Helly and the others in the max-plus world Carathéodory, Helly and the others in the max-plus world

2008-04-08

arxiv.org/abs/0804.1361v1

Mathematics

Combinatorics

10 pages, 3 figures

Scientific paper

Carath\'eodory's, Helly's and Radon's theorems are three basic results in discrete geometry. Their max-plus counterparts have been proved by various authors. In this paper, more advanced results in discrete geometry are shown to have also their max-plus counterparts: namely, the colorful Carath\'eodory theorem and the Tverberg theorem. A conjecture connected to the Tverberg theorem -- Sierksma's conjecture --, although still open for the usual convexity, is shown to be true in the max-plus settings.

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