Toward a twistless converse theorem

Series
Athens-Atlanta Number Theory Seminar
Time
Tuesday, October 27, 2026 - 4:00pm for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Nina Zubrilina – Harvard University – nizubrilina@gmail.com – https://sites.google.com/view/ninazubrilina/
Organizer
Alex Dunn

Weil's converse theorem characterizes modular forms by the functional equations of their L-functions and all of their twists by Dirichlet characters. Farmer, Koutsoliotas and Lemurell conjectured that the twist assumption is redundant, that is, a degree 2 Euler product whose L-function has a suitable functional equation should come from a Hecke eigenform. We report on some progress towards this conjecture based on work with Andrew Booker and Min Lee, as well as some recent LLM assistance.