“…First, we consider abelian Galois covers X → P ℓ with Galois group G, where for an integer ℓ ≥ 1, we denote by P ℓ the ℓ-dimensional projective space over k an algebraically closed field containing the number field k. For an integer m ≥ 1, we define U m to be the m-times self-fiber product of X over k and we let V m be the quotient of U m by G. Considering a non-singular model for X, say X , we obtain the nonsingular models U m and V m for U m and V m , respectively. Denoting by K and L, the function field of U m and V m , respectively, we obtain the following theorem which generalizes Theorem 1.2 of [10] and Theorem 1.1 of [11].…”