中文

GL$(n)$上尖形式扭曲等价的一个约束

数论 2020-01-07 v3

摘要

本注记回答并推广了 Kaisa Matomäki 的一个问题。我们证明,给定数域 FF 上 GLn_n 的两个尖自守表示 π1\pi_1π2\pi_2,其相应导子分别为 N1,N_1, N2,N_2, 则每个满足 π1χπ2\pi_1\otimes\chi\simeq\pi_2 且导子为 QQ 的特征标 χ\chi 满足界:QnN1N2.Q^n\mid N_1N_2. 若在每一个有限位 vv 上,π1,v\pi_{1,v} 在分歧时均为离散序列,则 QnQ^n 整除最小公倍数 [N1,N2].[N_1, N_2].

关键词

引用

@article{arxiv.1906.01047,
  title  = {A constraint for twist equivalence of cusp forms on GL$(n)$},
  author = {Dinakar Ramakrishnan and Liyang Yang},
  journal= {arXiv preprint arXiv:1906.01047},
  year   = {2020}
}

备注

The main result of the earlier version remains unchanged in this version. The main change is that the proof has been modified to "not use" anything about Galois representations or the local Langlands conjecture. Instead this new proof works totally on the "automorphic side", using only the representation theory of GL(n) and division algebras