A Lower Bound Technique for Triangulations of Simplotopes
A Lower Bound Technique for Triangulations of Simplotopes
复制标题
Simplotope三角剖分的下界技术
DOI:
10.1137/140972020
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
F. Su
中科院分区:
文献类型:
--
作者:
Tyler Seacrest;F. Su
Products of simplices, called simplotopes, and their triangulations arise naturally in algorithmic applications in game theory and optimization. We develop techniques to derive lower bounds for the size of simplicial covers and triangulations of simplotopes, including those with interior vertices. We establish that a minimal triangulation of a product of two simplices is given by a vertex triangulation, i.e., one without interior vertices. For products of more than two simplices, we produce bounds for products of segments and triangles. Aside from cubes, these are the first known lower bounds for triangulations of simplotopes with three or more factors, and our techniques suggest extensions to products of other kinds of simplices. We also construct a minimal triangulation of size 10 for the product of a triangle and a square using our lower bound.
DOI:
10.1016/j.jcta.2014.10.009
发表时间:
2015
期刊:
J. Comb. Theory, Ser. A
影响因子:
--
作者:
Cesar Ceballos;Arnau Padrol;Camilo Sarmiento
通讯作者:
Camilo Sarmiento