J. Cremona

collaborators

2 papers

math.NT2026

Hecke operators, Hecke Eigensystems, and Formal Modular Forms over Number Fields

J. E. Cremona

We develop an explicit theory of formal modular forms over arbitrary number fields $K$ , as functions of modular points. We define modular points for $Γ_{0} (n)$ and $Γ_1({…

math.NT2025

Bianchi Modular Forms over Imaginary Quadratic Fields with arbitrary class group

John Cremona, Kalani Thalagoda, Dan Yasaki

Let $K$ be an imaginary quadratic field and let $O_{K}$ be its ring of integers. For an integral ideal $n$ of $O_{K}$ , let $Γ_{0} (n)$ be the c…