The Harris-Venkatesh conjecture for derived Hecke operators I: imaginary dihedral forms

R Zhang - arXiv preprint arXiv:2301.00570, 2023 - arxiv.org
The Harris-Venkatesh conjecture posits a relationship between the action of derived Hecke
operators on weight-one modular forms and Stark units. We prove the full Harris-Venkatesh …