Algebra/Number Theory Seminar

An equivariant Tamagawa number formula for abelian t-motives and applications

Cristian Popescu, UCSD

Friday, November 22nd, 2024
1:00 PM - 2:00 PM
Hylan 1106A

We will explain the construction of a Galois equivariant Goss-type L-function associated to an abelian t-motive and outline the formulation and proof of a Tamagawa Number Formula for its special values at positive integers. This generalizes to the t-motive and equivariant settings Taelman’s celebrated class-number formula for Drinfeld modules. If time permits, we will show how the main result implies analogues of the Brumer-Stark and Coates-Sinnott Conjectures for abelian t-motives. This is based on joint work with Ferrara, Green and Higgins.

Event contact: thomas dot tucker at rochester dot edu