Crystallographic arrangements: Weyl groupoids and simplicial arrangements

Crystallographic arrangements: Weyl groupoids and simplicial arrangements
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晶体排列:Weyl群群和单纯排列

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发表时间:
2010
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通讯作者:
Michael Cuntz
Michael Cuntz
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作者:
Michael Cuntz

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我们引入了“晶体排列”的简单概念,并证明了这些排列与连接的简单连接的嘉当方案之间的一一对应,其中实根是有限根系统(直到两侧相等)。因此,“有限外尔群胚”的分类导致了单纯排列类的这个大子类的完整分类。
We introduce the simple notion of a ‘crystallographic arrangement’ and prove a one‐to‐one correspondence between these arrangements and the connected simply connected Cartan schemes for which the real roots are a finite root system (up to equivalence on both sides). Thus, the classification of ‘finite Weyl groupoids’ leads to a complete classification of this large subclass of the class of simplicial arrangements.