INTRODUCTION 99writing a book on L-functions for GLn [17]. The contents of these notes essentially
follows our outline for that book. In particular, the exposition in Lectures 1, 2, and
parts of 3 and 4 is drawn from drafts for this project. The exposition in Lecture 5
is drawn from the survey of our work on Converse Theorems in [13]. I would like
to t hank Piatetski-Shapiro for graciously allowing me to present part of our joint
efforts in these notes. I would also like to thank J acquet for many enlightening
conversations over the years on his work on L-functions for GLn. Finally I would
like all those who provided me wit h comments on and corrections to the ICTP
notes.