# Seminars & Colloquia Calendar

Complex Analysis and Geometry Seminar

## Torelli map and rigidity

#### Saikee Yeung (Purdue)

Location:  Zoom
Date & time: Friday, 22 April 2022 at 10:30AM - 11:30AM

Abstract: The classical Abel-Jacobi map induces the Torelli map from a moduli space of curves of genus $$ggeq 2$$ into the corresponding Siegel modular variety. The goal of the talk is to explain some geometric problems related to the mapping, focusing on a conjecture of Oort on scarcity of totally geodesic subvarieties in the Torelli image.  We will also explain its relation to a rigidity problem of representation of a lattice of semi-simple Lie groups in a mapping class group.  Some new approaches will be explained.

## Special Note to All Travelers

Directions: map and driving directions. If you need information on public transportation, you may want to check the New Jersey Transit page.

Unfortunately, cancellations do occur from time to time. Feel free to call our department: 848-445-6969 before embarking on your journey. Thank you.