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arXiv 1906.01469math.CO
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无条件自反多面体

Unconditional reflexive polytopes

Florian Kohl, McCabe Olsen, Raman Sanyal

摘要:

一个凸体是无条件的,如果它关于所有坐标超平面中的反射对称。在本文中,我们研究无条件格多面体的几何,组合和代数性质。特别是,我们刻画了完美图的无条件自反多面体。作为一个典型的例子,我们研究了带符号的Birkhoff多面体。此外,我们还构造了Gale-dual多面体对,并明确地描述了来自偏序集的无条件自反多面体的Gröbner基

英文摘要:

A convex body is unconditional if it is symmetric with respect to reflections in all coordinate hyperplanes. In this paper, we investigate unconditional lattice polytopes with respect to geometric, combinatorial, and algebraic properties. In particular, we characterize unconditional reflexive polytopes in terms of perfect graphs. As a prime example, we study the signed Birkhoff polytope. Moreover, we derive constructions for Gale-dual pairs of polytopes and we explicitly describe Gröbner bases for unconditional reflexive polytopes coming from partially ordered sets

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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