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A Soergel-like category for complex reflection groups of rank one
Mathematische Zeitschrift ( IF 1.0 ) Pub Date : 2019-06-28 , DOI: 10.1007/s00209-019-02358-x
Thomas Gobet , Anne-Laure Thiel

We introduce analogues of Soergel bimodules for complex reflection groups of rank one. We give an explicit parametrization of the indecomposable objects of the resulting category and give a presentation of its split Grothendieck ring by generators and relations. This ring turns out to be an extension of the Hecke algebra of the reflection group W and a free module of rank $$|W| (|W|-1)+1$$ | W | ( | W | - 1 ) + 1 over the base ring. We also show that it is a generically semisimple algebra if defined over the complex numbers.

中文翻译:

一级复杂反射群的类 Soergel 类别

我们为一级复杂的反射群引入了 Soergel 双模的类似物。我们给出了结果类别的不可分解对象的显式参数化,并通过生成器和关系给出了其分裂 Grothendieck 环的表示。这个环原来是反射群 W 的 Hecke 代数的扩展,并且是一个秩为 $$|W| 的自由模。(|W|-1)+1$$ | W | ( | W | - 1 ) + 1 在基环上。我们还表明,如果在复数上定义,它是一个一般的半单代数。
更新日期:2019-06-28
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