Cassandra (Cass) Halleck-Dubé

Mathematics

Cass Halleck-Dubé

I study geometric representation theory and the Langlands program.

In Spring 2026, I completed my PhD at UC Berkeley under Sug Woo Shin. During the 2026-2027 academic year, I will be visiting as a postdoctoral fellow at the Max Planck Institute for Mathematics, mentored by Tasho Kaletha. Beginning in 2027, I will be a Griffiths Assistant Professor at Duke University.

Research

My research broadly centers around applications of geometric representation theory and the geometry of moduli to arithmetic. In particular, my research interests include

  • Hitchin fibrations, affine Springer fibers, and endoscopy;
  • affine Deligne--Lusztig theory and nonarchimedean local representations; and
  • microlocal theory in positive characteristic.

Research and publications

Contact

Email
halleckdube@mpim-bonn.mpg.de
Address
Max Planck Institute for Mathematics
Vivatsgasse 7
53111 Bonn, Germany