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arXiv 1102.4389math.RTmath.QAmath.RA
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平坦联络与Brauer型代数

Flat connections and Brauer Type Algebras

Zhi Chen

摘要:

引入了一个Brauer型代数$B_G (Υ) $,它对应于每个伪反射群和每个Coxeter群$G$ .当$G$是一个单缀型Coxeter群时,我们证明了$B_G (Υ)$同构于Cohen,Gijsbers和Wales({ \it J. Algebra},{ \bf 280}(2005),107-153)引入的单缀型广义Brauer代数.当$G$是二面体群或$H_3$型Coxeter群时,证明了$B_G (Υ)$具有胞状结构,且对一般参数是半单的.此外,在构造过程中,我们将Lawrence-Krammer表示进一步推广到与所有伪反射群相关的复辫群。

英文摘要:

We introduce a Brauer type algebra $B_G (Υ) $ associated with every pseudo reflection group and every Coxeter group $G$. When $G$ is a Coxeter group of simply-laced type we show $B_G (Υ)$ is isomorphic to the generalized Brauer algebra of simply-laced type introduced by Cohen, Gijsbers and Wales ({\it J. Algebra}, {\bf 280} (2005), 107-153). We also prove $B_G (Υ)$ has a cellular structure and be semisimple for generic parameters when $G$ is a dihedral group or the type $H_3$ Coxeter group. Moreover, in the process of construction, we introduce a further generalization of Lawrence-Krammer representation to complex braid groups associated with all pseudo reflection groups.

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