Akshay Venkatesh (Stanford University) will present the Trjitzinsky Memorial Lectures. Lecture III. Langlands program for torsion classes. In this talk, I'll explain how an extension of the Langlands program links the type of question discussed in talks 1 and 2, and explain further results on this line. I won't assume any background in the Langlands program, but a bit of familiarity with modular forms will help.