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arXiv 1802.06343math.RT
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关于BGG范畴O的一个无限极限

On an infinite limit of BGG categories O

Kevin Coulembier, Ivan Penkov

摘要:

研究了根约化李代数g的Dynkin Borel子代数的BGG范畴O的一个版本,如gl(\infty).利用韦尔马模证明了关于扩张满度的结果,并计算了单模的高阶扩张.此外,我们还证明了范畴O是Ringel自对偶的,并开创了Koszul对偶的研究。一个重要的工具,在获得这些结果是一个等价的,我们建立适当的Serre subdronents的范畴O的g和范畴O的有限维约化子代数的g。

英文摘要:

We study a version of the BGG category O for Dynkin Borel subalgebras of root-reductive Lie algebras g, such as gl(\infty). We prove results about extension fullness and compute the higher extensions of simple modules by Verma modules. In addition, we show that our category O is Ringel self-dual and initiate the study of Koszul duality. An important tool in obtaining these results is an equivalence we establish between appropriate Serre subquotients of category O for g and category O for finite dimensional reductive subalgebras of g.

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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