Wednesday, September 30, 2026 · 2:00–3:00 PM · Hill Center 525

Birational cubic fourfolds via an Enriques Cremona transformation

Lisa Marquand , Rutgers University

Abstract:Let X be a very general cubic fourfolds containing an Enriques surface. Such a cubic is conjecturally irrational. A conjecture of Huybrechts predicts that there exists a unique non isomorphic cubic fourfolds Y birational to X. We explicitly construct Y via a new Cremona transform of the ambient projective space and verify the conjecture.

This is joint work with Corey Brooke.

Wednesday, October 7, 2026 · 2:00–3:00 PM · Hill Center 525

Rank and level for symplectic and orthogonal groups

Yuqiao Huang, Rutgers University

Abstract: The level and the rank of characters of finite classical groups have been studied in the work of Guralnick, Larsen, and Tiep (Forum Math. Pi 2020; Invent. Math. 2024). Following their strategy, we establish similar results, for finite symplectic groups in odd characteristic, and for finite orthogonal groups in characteristic 2

friday, october 14, 2026 · 2:30–3:30 PM · Hill Center 525

Title: TBD

TDB, TBD

Abstract: TBD

friday, october 23, 2026 · 2:30–3:30 PM · Hill Center 525

TitleTBD

Rongwei Yang, University of Albany/SUNY

Abstract: TBD