Abstract
Let \(\pi =\otimes _v'\pi _v\) be an arbitrary unitary cuspidal representation of \(\textrm{GL}(3)\) over a number field F. We show, for certain ray classes \(\mathcal {C},\) that
which implies that there are infinitely many unramified places v in \(\mathcal {C}\) such that \(\pi _v\)’s are tempered with Hecke eigenvalues lying inside the open unit disk. Furthermore, when \(F=\mathbb {Q},\) we consider the problem on the least prime p in an arithmetic progression such that \(\pi _p\) satisfies the Ramanujan conjecture. An effective upper bound of Linnik type for such a prime p is proved.
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Acknowledgements
I am very grateful to Dinakar Ramakrishnan for pleasant discussions. I would like to thank Kimball Martin for his helpful suggestions. Sincere thanks are also due to the anonymous referee for his/her careful reading and valuable comments.
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Yang, L. Arithmetic distribution of tempered components of cuspidal representations of \({{\,\textrm{GL}\,}}(3)\). Math. Z. 303, 66 (2023). https://doi.org/10.1007/s00209-023-03213-w
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DOI: https://doi.org/10.1007/s00209-023-03213-w