2 papers
math.NT2024
Rankin-Cohen Brackets of Hilbert Hecke Eigenforms
Yichao Zhang, Yang Zhou
Over any fixed totally real number field with narrow class number one, we prove that the Rankin-Cohen bracket of two Hecke eigenforms for the Hilbert modular group can only be a He…
math.NT2024
On Rankin-Cohen Brackets of Hecke Eigenforms and Modular Forms of Half-Integral Weight
YoungJu Choie, Winfried Kohnen, Yichao Zhang
We generalize the linear relation formula between the square of normalized Hecke eigenforms of weight and normalized Hecke eigenforms of weight , to Rankin-Cohen brackets o…