ON THE STRUCTURE OF THE AFFINE ASYMPTOTIC HECKE ALGEBRAS
ON THE STRUCTURE OF THE AFFINE ASYMPTOTIC HECKE ALGEBRAS
复制标题
仿射渐近Hecke代数的结构
DOI:
10.1007/s00031-022-09790-0
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发表时间:
2022
影响因子:
0.7
通讯作者:
DOBROVOLSKA, GALYNA
中科院分区:
文献类型:
--
作者:
BEZRUKAVNIKOV, ROMAN;DAWYDIAK, STEFAN;DOBROVOLSKA, GALYNA
According to a conjecture of Lusztig, the asymptotic affine Hecke algebra should admit a description in terms of the Grothedieck group of sheaves on the square of a finite set equivariant under the action of the centralizer of a nilpotent element in the reductive group. A weaker form of this statement, allowing for possible central extensions of stabilizers of that action, has been proved by the first named author with Ostrik. In the present paper, we describe an example showing that nontrivial central extensions do arise, thus the above weaker statement is optimal.We also show that Lusztig's homomorphism from the affine Hecke algebra to the asymptotic affine Hecke algebra induces an isomorphism on cocenters and discuss the relation of the above central extensions to the structure of the cocenter.
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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
I. Losev;I. Panin
通讯作者:
I. Panin
影响因子:
3.9
作者:
R. Bezrukavnikov;I. Losev
通讯作者:
I. Losev
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
Jian
通讯作者:
Jian
影响因子:
4.9
作者:
R. Bezrukavnikov;I. Mirkovic
通讯作者:
I. Mirkovic
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
Du Jie
通讯作者:
Du Jie