arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.4015math.CO
收藏

凹多边形II

Alcoved Polytopes II

Thomas Lam, Alexander Postnikov

摘要:

这是第二个两篇论文,我们研究多面体所产生的仿射Coxeter安排。我们的结果包括它们的体积公式,以及所有外尔群的超单形,下降数和主要指数的相容定义。给出了外尔群阶的外尔公式的一个q-模拟.对于A_n,C_n和D_4,我们给出了一个诱导凹多面体三角剖分的Grobner基。

英文摘要:

This is the second of two papers where we study polytopes arising from affine Coxeter arrangements. Our results include a formula for their volumes, and also compatible definitions of hypersimplices, descent numbers and major index for all Weyl groups. We give a q-analogue of Weyl's formula for the order of the Weyl group. For A_n, C_n and D_4, we give a Grobner basis which induces the triangulation of alcoved polytopes.

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。

↑