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arXiv 1906.01047math.NT
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GL $(n)$上尖点形式扭等价的一个约束

A constraint for twist equivalence of cusp forms on GL$(n)$

Dinakar Ramakrishnan, Liyang Yang

摘要:

本说明回答并概括了Kaisa Matomäki的一个问题。本文证明了在导体$N_1,$的数域$F$上给出$N_2,$的两个尖点自守表示$π_1$和$π_2$,使得导体$Q,$的$π_1\otimesχ\simeqπ_2$满足下界:$Q^n\mid N_1N_2.$如果在每个有限位置$π_{1,v}$是离散级数,则$Q^n$整除最小公倍数$[N_1, N_2].$

英文摘要:

This Note answers, and generalizes, a question of Kaisa Matomäki. We show that give two cuspidal automorphic representations $π_1$ and $π_2$ of $GL_n$ over a number field $F$ of respective conductors $N_1,$ $N_2,$ every character $χ$ such that $π_1\otimesχ\simeqπ_2$ of conductor $Q,$ satisfies the bound: $Q^n\mid N_1N_2.$ If at every finite place $v,$ $π_{1,v}$ is a discrete series whenever it is ramified, then $Q^n$ divides the least common multiple $[N_1, N_2].$

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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