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arXiv 1002.0829math.RTmath.GR
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关于Demazure模块的支持类型

On the support varieties of Demazure modules

Benjamin F. Jones, Daniel K. Nakano

摘要:

我们考虑Demazure模的支集簇,某些$B$ -模在约化群的表示论中是重要的。在许多情况下,我们能够计算这些支持品种超过$B_1$,第一Frobenius内核的博雷尔子群,并将它们与轨道品种。当基本代数群为$A_1$或$A_2$型时,我们给出了支撑簇的完整计算.我们还考虑了Demazure模的饱和($G$轨道)$B_1$支撑簇,并证明了这些簇之间的包含关系与Bruhat序相容.

英文摘要:

We consider the support varieties of Demazure modules, certain $B$-modules important in the representation theory of reductive groups. In many cases we are able to compute these support varieties over $B_1$, the first Frobenius kernel of a Borel subgroup, and relate them to orbital varieties. We provide a complete calculation of the support varieties when the underlying algebraic group has type $A_1$ or $A_2$. We also consider the saturation ($G$ orbit of) $B_1$ support varieties for Demazure modules and show that the inclusion relations among these varieties are compatible with the Bruhat order.

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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