A characterization of a special ordering in a root system

A characterization of a special ordering in a root system
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根系统中特殊排序的表征

DOI:
10.1090/s0002-9939-1994-1169886-7
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发表时间:
1994
期刊:
--
影响因子:
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通讯作者:
P. Papi
P. Papi
中科院分区:
--
文献类型:
--
作者:
P. Papi

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相似文献

本文给出了根系R中正根集合的序与R的Weyl群元素的约化表达式相联系的充要条件。最后,我们刻画了可以给出这种序的正根的集合。
We give necessary and sufficient conditions for an ordering of a set of positive roots in a root system R to be associated to a reduced expression of an element of the Weyl group of R . Finally we characterize the sets of positive roots which can be given such an ordering.