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Test vectors for Rankin-Selberg L-functions
Journal article   Peer reviewed

Test vectors for Rankin-Selberg L-functions

Andrew R Booker, M Krishnamurthy and Min Lee
Journal of number theory, Vol.209, pp.37-48
04/01/2020
DOI: 10.1016/j.jnt.2019.08.010

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Abstract

We study the local zeta integrals attached to a pair of generic representations (pi, tau) of GL(n) x GL(m), > m, over a p-adic field. Through a process of unipotent averaging we produce a pair of corresponding Whittaker functions whose zeta integral is non-zero, and we express this integral in terms of the Langlands parameters of pi and tau. In many cases, these Whittaker functions also serve as a test vector for the associated Rankin-Selberg (local) L-function. (C) 2019 Elsevier Inc. All rights reserved.
Mathematics Physical Sciences Science & Technology

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