设P是由一些复数组成的集合，其中包括0与1，如果P中任意两个数的和、差、积、商（除数不为0）仍是P中的数，则称P为一个数域。 常见数域： 复数域C；实数域R；有理数域Q。
算法数论：格点，数域，曲线和密码系统。
Algorithmic Number Theory: Lattices, Number Fields, Curves and Cryptography.
本文提出了一种在已知有限数域上产生一类安全椭圆曲线的算法。
This paper presents a method for generating elliptic curves of known order over finite fields.
将信息获取能力分指标取数域延拓，求得相关对象关于灰类的综合聚类系数。
The number field continuation was adopted by information acquire ability sub index, and the gray comprehensive clustering coefficients of relative objects were also acquired.
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