Dyck path triangulations and extendability
Dyck path triangulations and extendability
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Dyck 路径三角剖分和可扩展性
DOI:
10.1016/j.jcta.2014.10.009
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Camilo Sarmiento
中科院分区:
文献类型:
--
作者:
Cesar Ceballos;Arnau Padrol;Camilo Sarmiento
We introduce the Dyck path triangulation of the cartesian product of two simplices Δ n− 1× Δ n− 1. The maximal simplices of this triangulation are given by Dyck paths, and the construction naturally generalizes to certain rational Dyck paths. Our study of the Dyck path triangulation is motivated by extendability problems of partial triangulations of products of two simplices. We show that whenever m≥ k> n, any triangulation of the product of the k-skeleton of Δ m− 1 with Δ n− 1 extends to a unique triangulation of Δ m− 1× Δ n− 1. Moreover, using the Dyck path triangulation, we prove that the bound k> n is optimal. We also exhibit interpretations of our results in the language of tropical oriented matroids that are analogous to classical results in oriented matroid theory.
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DOI:
--
发表时间:
1993
期刊:
Computational geometry
影响因子:
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DOI:
--
发表时间:
2016
期刊:
Journal of Combinatorial Theory
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