Koszul duality for stratified algebras I. Balanced quasi-hereditary algebras

Koszul duality for stratified algebras I. Balanced quasi-hereditary algebras
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分层代数的 Koszul 对偶性 I. 平衡准遗传代数

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发表时间:
2009
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通讯作者:
V. Mazorchuk
V. Mazorchuk
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文献类型:
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作者:
V. Mazorchuk

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我们给出了一个完整的图片之间的相互作用Koszul和Ringel对偶准遗传代数承认线性倾斜(共)决议的标准和costard模块。我们表明,这样的代数是Koszul,这些代数的类是封闭的两个对偶,并在这个类这两个对偶交换。所有的参数减少到短的计算在有界的分次模的导出范畴。
We give a complete picture of the interaction between Koszul and Ringel dualities for quasi-hereditary algebras admitting linear tilting (co)resolutions of standard and costandard modules. We show that such algebras are Koszul, that the class of these algebras is closed with respect to both dualities and that on this class these two dualities commute. All arguments reduce to short computations in the bounded derived category of graded modules.