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单词 Algebraic extension
释义

Algebraic extension

中文百科

代数扩张

代数扩张是抽象代数中域扩张的一类。一个域扩张L/K被称作代数扩张,若且唯若L中的每个元素都是某个以K中元素为系数的非零多项式的根。反之则称之为超越扩张。最简单的代数扩张例子有:\mathbb{C}/\mathbb{R}\mathbb{Q}(\sqrt{2})/\mathbb{Q}

英语百科

Algebraic extension 代数扩张

In abstract algebra, a field extension L/K is called algebraic if every element of L is algebraic over K, i.e. if every element of L is a root of some non-zero polynomial with coefficients in K. Field extensions that are not algebraic, i.e. which contain transcendental elements, are called transcendental.

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更新时间:2025/6/17 18:05:29