Toric varieties and a generalization of the Springer resolution

Toric varieties and a generalization of the Springer resolution
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复曲面变体和施普林格分辨率的推广

DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
W. Graham
W. Graham
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文献类型:
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作者:
W. Graham

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半单李代数的幂零锥的Springer分解在表示论中起着重要的作用。幂零锥等于Spec R,其中R是幂零锥上的正则函数环。本文构造并研究了SpecS簇的Springer分解的一个类似形式,其中S是正则幂零轨道的泛覆盖上的正则函数环。该结构利用复曲面簇的理论。利用这一构造,我们对Broer和Graham关于Spec S的结果提供了新的证明.最后,我们表明,该结构可以适应覆盖的任意幂零轨道。
The Springer resolution of the nilpotent cone of a semisimple Lie algebra has played an important role in representation theory. The nilpotent cone is equal to Spec R, where R is the ring of regular functions on the nilpotent cone. This paper constructs and studies an analogue of the Springer resolution for the variety Spec S, where S is the ring of regular functions on the universal cover of the regular nilpotent orbit. The construction makes use of the theory of toric varieties. Using this construction, we provide new proofs of results of Broer and of Graham about Spec S. Finally, we show that the construction can be adapted to covers of an arbitrary nilpotent orbit.
广义 Springer 对应关系的新方法
DOI: 10.1090/tran/8890
发表时间: 2023
影响因子: 1.3
作者:
Graham, William;Precup, Martha;Russell, Amber
通讯作者: Russell, Amber