仿射Laumon空间与$U_q(\widehat{\mathfrak{gl}}_n)$的反梯度对偶Verma模
Affine Laumon space and contragredient dual Verma module of $U_q(\widehat{\mathfrak{gl}}_n)$
AI总结:
本文研究量子群在仿射Laumon空间等变K-理论上的作用,证明其与反梯度对偶Verma模等同,改进了前人结果,证明采用稳定包络变体。
摘要:
我们研究了量子群$U_q(\widehat{\mathfrak{gl}}_n)$在仿射Laumon空间的等变K-理论上的作用。我们证明,在远离临界水平的任意最低权处,该作用可与$U_q(\widehat{\mathfrak{gl}}_n)$的反梯度对偶Verma模等同,改进了Braverman-Finkelberg和Neguţ的早期结果。证明使用了Maulik-Okounkov在研究Nakajima箭图簇时首次引入的稳定包络的一个变体。
英文摘要:
We study the action of the quantum group $U_q(\widehat{\mathfrak{gl}}_n)$ on the equivariant K-theory of affine Laumon spaces. We show that, at any lowest weight away from the critical level, this can be identified with the contragredient dual Verma module of $U_q(\widehat{\mathfrak{gl}}_n)$, improving earlier results of Braverman-Finkelberg and Neguţ. The proof uses a variant of stable envelopes first introduced by Maulik-Okounkov in the study of Nakajima quiver varieties.
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