ISOMETRY CLASSES OF GENERALIZED ASSOCIAHEDRA

ISOMETRY CLASSES OF GENERALIZED ASSOCIAHEDRA
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广义联面体的等距类

DOI:
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发表时间:
2007
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影响因子:
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通讯作者:
H. Thomas
H. Thomas
中科院分区:
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文献类型:
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作者:
N. Bergeron;Christophe Hohlweg;C. Lange;H. Thomas

文献摘要

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令 W 为有限 Coxeter 群。广义关联面体是由 W 的置换面体和 W 的 Coxeter 图的方向构造的凸多面体。它们在 Fomin 和 Zelevinsky 发起的有限型簇代数理论中发挥着基础作用,并且也出现在代数拓扑中。在本文中,我们证明这些多面体的等距性是由定向 Coxeter 图的某些自同构给出的。
Let W be a finite Coxeter group. Generalized associahedra are convex polytopes constructed from a permutahedron of W and an orientation of the Coxeter graph of W. They play a fundamental role in the theory of finite type cluster algebras initiated by Fomin and Zelevinsky, and also appear in algebraic topology. In this article, we show that the isometries of these polytopes are given by certain automorphisms of oriented Coxeter graphs.