SPEAKER:     Andrew Booker, Univ. of Michigan, Ann Arbor

TITLE:    Effective computation of Maass cusp forms

ABSTRACT:
I will describe some joint work with Andreas Strombergsson and Akshay Venkatesh concerning rigorous computation of eigenfunctions of the Laplacian for congruence groups. As application we verify Selberg's eigenvalue conjecture for small levels, improving on work of Huxley.