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Curtis homomorphisms and the integral Bernstein center for GLn
Algebra & Number Theory ( IF 0.9 ) Pub Date : 2020-11-19 , DOI: 10.2140/ant.2020.14.2607
David Helm

We describe two conjectures, one strictly stronger than the other, that give descriptions of the integral Bernstein center for GL_n(F) (that is, the center of the category of smooth W(k)[GL_n(F)]-modules, for F a p-adic field and k an algebraically closed field of characteristic l different from p) in terms of Galois theory. Moreover, we show that the weak version of the conjecture (for m at most n) implies the strong version of the conjecture. In a companion paper [HM] we show that the strong conjecture for n-1 implies the weak conjecture for n; thus the two papers together give an inductive proof of both conjectures. The upshot is a description of the integral Bernstein center for GL_n in purely Galois- theoretic terms; previous work of the author shows that such a description implies the conjectural "local Langlands correspondence in families" of Emerton and the author.

中文翻译:

Curtis 同态和 GLn 的积分 Bernstein 中心

我们描述了两个猜想,一个比另一个强,它们描述了 GL_n(F) 的积分 Bernstein 中心(即平滑 W(k)[GL_n(F)]-模的范畴的中心,对于根据伽罗瓦理论,F 是 p 进场,k 是特征 l 与 p) 不同的代数闭场。此外,我们证明了猜想的弱版本(对于 m 至多 n)意味着猜想的强版本。在一篇配套论文 [HM] 中,我们证明了 n-1 的强猜想意味着 n 的弱猜想;因此,这两篇论文共同对这两个猜想进行了归纳证明。结果是用纯粹的伽罗瓦理论术语描述了 GL_n 的积分伯恩斯坦中心;作者之前的工作表明,这样的描述意味着推测“
更新日期:2020-11-19
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