Residual paramodularity of a certain Calabi-Yau threefold

Neil Dummigan, Gonzalo Tornaría

We prove congruences of Hecke eigenvalues between cuspidal Hilbert newforms $f_{79}$ and $h_{79}$ over $F=\mathbb{Q}(\sqrt{5})$, of weights (2,2) and (2,4) respectively, level of no…