2 papers
math.NT2025
Eisenstein cocycles for imaginary quadratic fields
Emmanuel Lecouturier, Romyar Sharifi, Sheng-Chi Shih +1
We construct Eisenstein cocycles for arithmetic subgroups of GL_2 of imaginary quadratic fields valued in second K-groups of products of two CM elliptic curves. We use these to con…
math.AG2024
Toroidal compactifications of the moduli spaces of Drinfeld modules
Takako Fukaya, Kazuya Kato, Romyar Sharifi
We construct toroidal compactifications of the moduli spaces of Drinfeld -modules of rank with level structure as moduli spaces of log Drinfeld modules of…