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ON THE FIRST OCCURRENCE OF CUSPIDAL REPRESENTATIONS OF SYMPLECTIC GROUPS

Published online by Cambridge University Press:  03 November 2005

David Ginzburg
Affiliation:
School of Mathematics, Tel-Aviv University, Ramat Aviv, Tel Aviv 69978, Israel (ginzburg@post.tau.ac.il)
Nadya Gurevich
Affiliation:
School of Mathematics, Ben Gurion University of the Negev, PO Box 653, Be’er Sheva 84105, Israel (ngur@cs.bgu.ac.il)

Abstract

We study the first occurrence of a cuspidal representation $\pi$ of $\mathrm{Sp}_{2n}(\mathbb{A})$ in the tower of split orthogonal groups under symplectic-orthogonal theta lift. We give upper and lower bounds for the first occurrence in terms of the wave front of $\pi$. Besides we describe a class of small cuspidal representations whose first occurrence is the maximal possible.

Type
Research Article
Copyright
2005 Cambridge University Press

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