These are notes for Ali Altuğ's course MA842 Automorphic Forms and the Arthur-Selberg Trace Formula, at BU in Spring 2018. They were written in real time during the lectures using Mathbook XML/Pretext and Pug.
The HTML version can be viewed at https://alexjbest.github.io/aut-forms-arthur-selberg/aut-forms-arthur-selberg.html and a pdf copy at https://alexjbest.github.io/aut-forms-arthur-selberg/aut-forms-arthur-selberg.pdf.