Commuting self-adjoint operators on space of modular forms. Simultaneous eigenforms yield Euler products L(f,s) = Π (1 − a_p p^{-s} + p^{k-1} p^{-2s})^{-1}.
Commuting self-adjoint operators on space of modular forms. Simultaneous eigenforms yield Euler products L(f,s) = Π (1 − a_p p^{-s} + p^{k-1} p^{-2s})^{-1}.