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arXiv 0811.2080math.RTmath.QA
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O类BGG的公理化框架

Axiomatic framework for the BGG Category O

Apoorva Khare

摘要:

本文的主要目标是证明各种各样的无限维代数都有一个共同的结构,包括三角分解和权理论。这种结构使我们能够定义和研究BGG类别O,推广以前的定义。提出了我们的公理化框架,我们提出了充分条件,保证有限的长度,足够的投影,和块分解成最高权类别。这个框架比通常的O理论严格地更一般;除了半单李代数和它们的量子群之外,还需要容纳(量子化或更高秩的)无穷小Hecke代数。然后,我们提出了许多例子,其中两个家庭进行了详细研究。这些是不一定使用根或权格(对于这些,我们研究中心和中心特征)和无穷小Hecke代数定义的量子群。

英文摘要:

The main goal of this paper is to show that a wide variety of infinite-dimensional algebras all share a common structure, including a triangular decomposition and a theory of weights. This structure allows us to define and study the BGG Category O, generalizing previous definitions of it. Having presented our axiomatic framework, we present sufficient conditions that guarantee finite length, enough projectives, and a block decomposition into highest weight categories. The framework is strictly more general than the usual theory of O; this is needed to accommodate (quantized or higher rank) infinitesimal Hecke algebras, in addition to semisimple Lie algebras and their quantum groups. We then present numerous examples, two families of which are studied in detail. These are quantum groups defined using not necessarily the root or weight lattices (for these, we study the center and central characters), and infinitesimal Hecke algebras.

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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