nebentypusとは 意味・読み方・使い方

名詞

nebentypus

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

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