摘要

We obtain a quantitative version of the classical Chevalley-Weil theorem for curves. Let phi : (C) over tilde -%26gt; C be an unramified morphism of non-singular plane projective curves defined over a number field K. We calculate an effective upper bound for the norm of the relative discriminant of the number field K(Q) over K for any point P is an element of C(K) and Q is an element of phi(-1)(P).

  • 出版日期2012