在线词典

分类:语言工具
在线词典,是一款在线使用的中英文查词词典。本工具支持查询英文和中文单词及词组的含义,查询效率高、结果丰富,包括单词变体、常用短语、英英释义、同义词、同根词、词语辨析等,是外语学习者必备的在线查词工具。

Totally real number field

查词链接:https://www.dute.org/dict/Totally_real_number_field复制链接
全实域(全实数域的定义:数域的每个嵌入的像都落在实数域。判定方法:仅有实根或者特征多项式的所有根都是实数。全实数域在代数数论中易处理,任意阿贝尔扩张要么是全实域,要么存在极大的全实子域)
查看英英释义
abstract:
In number theory, a number field K is called totally real if for each embedding of K into the complex numbers the image lies inside the real numbers. Equivalent conditions are that K is generated over Q by one root of an integer polynomial P, all of the roots of P being real; or that the tensor product algebra of K with the real field, over Q, is a product of copies of R.

网络释义
全实域
... Quadratic number field 二次域 totally real number field 全实域 gaussian number field 高斯数域 ...
* 以上查询结果来自于网络,仅供参考。
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