unramified manifold

In this paper we address approximation calculations on the elliptic curves defined over unramified extensions of 2-adic number fields,including the finite representation of rational points of an elliptic curve over such fields,lifting algorithms in the point addition and the addition formula with approximation calculations under this representation.

研究了Q2的非分歧扩域上椭圆曲线的近似计算问题:椭圆曲线有理点群中元素的有限表示、点加法中的提升算法以及点加法的近似计算等。