Pursuing the double affine Grassmannian I: transversal slices via instantons on A_k-singularities
Pursuing the double affine Grassmannian I: transversal slices via instantons on A_k-singularities
复制标题
追求双仿射格拉斯曼 I:通过 A_k-奇点上的瞬子进行横向切片
DOI:
10.1215/00127094-2010-011
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
M. Finkelberg
中科院分区:
文献类型:
--
作者:
A. Braverman;M. Finkelberg
This paper is the first in a series that describe a conjectural analog of the geometric Satake isomorphism for an affine Kac-Moody group. In this paper we construct a model for the singularities of some would-be Schubert varieties in the affine Grassmannian for an affine Kac-Moody group. We formulate a conjecture describing the (local) intersection cohomology of these varieties in terms of integrable representations of the Langlands dual affine Kac-Moody group and check this conjecture in a number of cases. Roughly speaking the above singularities are constructed by looking at the Uhlenbeck space of instantons on the quotient of the affine plane by a finite cyclic subgroup of SL(2).
影响因子:
1.8
作者:
L. Florentin;Chrysanthy Bili;K. Kekou;N. Tripodis;A. Mavrou;C. Metaxotou
通讯作者:
C. Metaxotou