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arXiv 1401.4982math.RA
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齐次G-代数II

Homogeneous G-algebras II

R. Martinez-Villa, J. Mondragon

摘要:

G-代数,或Groebner基代数,被Levandovsky考虑,这些代数包括非常重要的代数家族,如Weyl代数和有限维李代数的泛包络代数。这些代数不是以自然的方式分级的,但它们是过滤的。研究它们的性质的标准方法是去关联的分次代数。在前一篇文章中,我们研究了G-代数的一个齐次形式,它是自然分次的,通过一个des齐次性质,我们得到了一个普通的G-代数。在我们的第一篇论文的主要结果如下:齐次G-代数是Koszul有限的全球范围内,Artin Schelter经常,Noether和有一个庞加莱Birkoff基础。利用生成元和关系给出了Yoneda代数的结构。本文的第二部分考虑量子多项式环,证明了对于量子生成分次模,与通常的多项式环中的上同调公式类似的上同调公式。第三部分利用前一部分的结果研究了齐次G-代数的上同调。第四部分研究了齐次G-代数B与其des齐次化B/(Z-1)B=A之间的关系,并给出了它们在有限维李代数和Weyl代数研究中的应用。本文的最后一节在模的层次上研究了均匀化代数B、它的分次局部化B_{z}、des均匀化代数A=B/(Z-1)B和Yoneda代数B^{!}之间的关系。本文在导出范畴的层次上研究了这些代数之间的关系。

英文摘要:

G-algebras, or Groebner bases algebras, were considered by Levandovsky, these algebras include very important families of algebras, like the Weyl algebras and the universal enveloping algebra of a finite dimensional Lie algebra. These algebras are not graded in a natural way, but they are filtered. Going to the associated graded algebra is the standard way to study their properties. In a previous paper we studied an homogeneous version of the G-algebras, which results naturally graded, and through a des homogenization property, we obtain an ordinary G-algebra. The main results in our first paper were the following: Homogeneous G-algebras are Koszul of finite global dimension, Artin Schelter regular, noetherian and have a Poincare Birkoff basis. We give the structure of their Yoneda algebras by generators and relations. In the second part of the paper we consider the quantum polynomial ring and prove, for the finitely generated graded modules, cohomology formulas analogous to those we have in the usual polynomial ring. In the third part we use the results of the previous part to study the cohomology of the homogeneous G-algebras. Part four was dedicated to the study of the relations between an homogeneous G-algebra B and its des homogenization B/(Z-1)B=A, Applications to the study of finite dimensional Lie algebras and Weyl algebras were given. In the last sections of the paper we study the relations, at the level of modules, among the homogenized algebra B, its graded localization B_{z}, the des homogenization A=B/(Z-1)B and the Yoneda algebra B^{!}. In this paper we investigate the relations among all these algebras at the level of derived categories.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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