for this workshop

## Arithmetic intersection theory on Shimura varieties

at the

American Institute of Mathematics, Pasadena, California

organized by

Ben Howard, Chao Li, Keerthi Madapusi Pera, and Wei Zhang

This workshop, sponsored by AIM and the NSF, will be devoted to connections between automorphic forms, algebraic cycles, and intersection theory. Many phenomena in automorphic forms have interesting analogues in algebraic or arithmetic geometry. One key example is provided by Kudla and Kudla-Millson’s generating series of special cycles, which are geometric analogues of theta series. Another is the Gan-Gross-Prasad period integral, which also has an arithmetic analogue in terms of intersections of special cycles. The workshop’s goal is to further develop instances of these known analogies, and to explore new ones, involving novel tools like derived algebraic geometry.

The main topics for the workshop are

- Connections between periods of automorphic forms and the arithmetic geometry of Shimura varieties and their function field analogues.
- Modularity results for generating series of algebraic cycles.
- Applications of derived algebraic geometry to intersection theory.

This event will be run as an AIM-style workshop. Participants will be invited to suggest open problems and questions before the workshop begins, and these will be posted on the workshop website. These include specific problems on which there is hope of making some progress during the workshop, as well as more ambitious problems which may influence the future activity of the field. Lectures at the workshop will be focused on familiarizing the participants with the background material leading up to specific problems, and the schedule will include discussion and parallel working sessions.

The deadline to apply for support to participate in this workshop has passed.

For more information email *workshops@aimath.org*