AbstractIn this talk we discuss a notion of $\psi$-Dirichlet in Diophantine approximation which concerns improving Dirichlet’s approximation theorem to a general approximating function $\psi$. This notion was introduced by Kleinbock and Wadleigh in 2018 and generalizes the classical notion of a matrix being Dirichlet-improvable. In particular, we prove a partial zero-one law for the Lebesgue m...
BIMSA-YMSC Number Theory Lunch SeminarOrganizers:Yong Suk Moon, Koji ShimizuSpeaker:Artan SheshmaniTime:Thur., 12:00-13:00, May 21, 2026Venue:BIMSA A4-1Title:Counting torsion 2 dimensional sheaves in CY3 and modular formsAbstract:There is a conjecture by physicists that counting of torsion sheaves with 2 dimensional support deforming in ambient Calabi Yau threefold is governed by modular fo...