Ziegler’s Multireflection Arrangements Are Free

Ziegler’s Multireflection Arrangements Are Free
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齐格勒的多重反射装置是免费的

DOI:
10.1080/10586458.2014.939787
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发表时间:
2014
影响因子:
0.5
通讯作者:
G. Röhrle
G. Röhrle
中科院分区:
数学3区
文献类型:
--
作者:
Torsten Hoge;G. Röhrle

文献摘要

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1989年,齐格勒提出了多重排列的概念。一个自然的例子是单一反射组的反射排列,其多重性由与每个超平面相关的反射数量给出。对于除三个不可约群之外的所有群,齐格勒表明,每个这样的多重反射排列都是自由的。我们通过确认这些突出的案例来完成齐格勒的例子。
In 1989, Ziegler introduced the concept of a multiarrangement. One natural example is the reflection arrangement of a unitary reflection group with multiplicity given by the number of reflections associated with each hyperplane. For all but three irreducible groups, Ziegler showed that each such multireflection arrangement is free. We complete Ziegler’s example by confirming these outstanding cases.