# Enumerative arithmetic geometry and automorphic forms

*Tony Feng (MIT)*

**20-May-2022, 19:00-20:00 (23 months ago)**

**Abstract: **The problem of counting vectors with given length in a lattice turns out to have much more structure than initially expected, and is connected with the theory of so-called automorphic forms. A geometric analogue of this problem is to count global sections of vector bundles on a curve over a finite field. The generating functions for such counts are special automorphic forms called theta series. In joint work with Zhiwei Yun and Wei Zhang, we find a family of generalizations of such counting problems in the enumerative geometry of arithmetic moduli spaces, which lead to generating functions that we call higher theta series. I will explain theorems and conjectures around these higher theta series.

algebraic geometry

Audience: researchers in the topic

**Comments: **The synchronous discussion for Tony Fengâ€™s talk is taking place not in zoom-chat, but at tinyurl.com/2022-05-20-tf (and will be deleted after ~3-7 days).

**Stanford algebraic geometry seminar **

**Series comments: **The seminar was online for a significant period of time, but for now is solely in person.
More seminar information (including slides and videos, when available): agstanford.com

Organizer: | Ravi Vakil* |

*contact for this listing |