Number Theory Seminar

I will explain a construction of an Euler system for the adjoint of a modular form and its twists. The Euler system comes from classes in the cohomology of Siegel three-folds. This follows the template hinted at in my colloquium talk (but prior attendance is not assumed!) and is an example of a construction that yields many new (cyclotomic) Euler systems. This is joint work with Marco Sangiovanni Vincentelli.