Finiteness for Hecke algebras of $p$-adic groups
Finiteness for Hecke algebras of $p$-adic groups
复制标题
$p$-adic 群的 Hecke 代数的有限性
DOI:
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发表时间:
2022
期刊:
影响因子:
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通讯作者:
Gilbert Moss
中科院分区:
文献类型:
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作者:
Jean;David Helm;R. Kurinczuk;Gilbert Moss
. Let G be a reductive group over a non-archimedean local field F of residue characteristic p . We prove that the Hecke algebras of G ( F ) with coefficients in any noetherian Z ℓ -algebra R with ℓ 6 = p , are finitely generated modules over their centers, and that these centers are finitely generated R -algebras. Following Bernstein’s original strategy, we then deduce that “second adjointness” holds for smooth representations of G ( F ) with coefficients in any Z [ 1 p ]-algebra. These results had been conjectured for a long time. The crucial new tool that unlocks the problem is the Fargues-Scholze morphism between a certain “excursion algebra” defined on the Langlands parameters side and the Bernstein center of G ( F ). Using this bridge, our main results are representation theoretic counterparts of the finiteness of certain morphisms between coarse moduli spaces of local Langlands parameters that we also prove here, which may be of independent interest.
DOI:
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发表时间:
2020-09
期刊:
arXiv: Number Theory
影响因子:
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作者:
Jean-François Dat;David Helm;R. Kurinczuk;Gilbert Moss
通讯作者:
Jean-François Dat;David Helm;R. Kurinczuk;Gilbert Moss