nebentypus

English

Etymology

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Noun

nebentypus

1. (mathematics) The character χ, as applied to a modular form.
   • 2016, Tobias Berger, Krzysztof Klosin, “A $p$-adic Hermitian Maass lift”, in arXiv‎^[1]:

     For $K$ an imaginary quadratic field with discriminant $-D_{K}$ and associated quadratic Galois character $\chi _{K}$, Kojima, Gritsenko and Krieg studied a Hermitian Maass lift of elliptic modular cusp forms of level $D_{K}$ and nebentypus $\chi _{K}$ via Hermitian Jacobi forms to Hermitian modular forms of level one for the unitary group $U(2,2)$ split over $K$.