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单词 Extension of a field
释义

Extension of a field

中文百科

域扩张 Field extension

(重定向自Extension of a field)

域扩张field extensions)是数学分支抽象代数之域论中的主要研究对象,基本想法是从一个基域开始以某种方式构造包含它的“更大”的域。域扩张可以推广为环扩张。

英语百科

Field extension 域扩张

(重定向自Extension of a field)

In abstract algebra, field extensions are the main object of study in field theory. The general idea is to start with a base field and construct in some manner a larger field that contains the base field and satisfies additional properties. For instance, the set Q(√2) = {a + b√2 | a, bQ} is the smallest extension of Q that includes every real solution to the equation x = 2.

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