Irreducible projective modules of the Hecke algebras of a finite coxeter group

Irreducible projective modules of the Hecke algebras of a finite coxeter group
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有限 coxeter 群的 Hecke 代数的不可约射影模

DOI:
10.1016/0021-8693(89)90258-5
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发表时间:
1989
期刊:
影响因子:
0.9
通讯作者:
H. Yamane
H. Yamane
中科院分区:
数学3区
文献类型:
--
作者:
H. Yamane

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本文对有限Coxeter群W的非半单Hecke代数H(W,[*],{E@,})的不可约投射模,或等价地(如[6])不可约主不可分解模进行分类.设(W,3)是有限Coxeter系[2],t是不定式,q= t*.我们用H(W,q)表示一般的Hecke-Iwaho~代数[9,2,lo]。这意味着H(W,q)是具有基(T(w)/WE W>的C(t)-代数,乘法定义为
In this paper, we classify the irreducible projective modules, or, equivalently (see, eg,[6]), the irreducible principal indecomposable modules, of a non-semisimple Hecke algebra H (W,[*),{E@, of a finite Coxeter group W.Let (W, 3) be a finite Coxeter system [2], and t an indeterminate, q= t*. We denote by H (W, q) the generic Hecke-Iwaho~ algebra [9, 2, lo]. This means that H (W, q) is the C (t)-algebra with the basis (T (w)/WE W> and the multiplication defined by