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单词 Irreducible fraction
释义

Irreducible fraction

中文百科

最简分数

最简分数既约分数指的是分子与分母互质的分数。 若一分数可表为\frac{p}{q},且p , q \in \mathbb{Z}(整数),(p,q) = 1,则称\frac{p}{q}最简分数。 假若p和q还有别的公因数,则其非最简分数。若(p,q) = d,且设p = k_1 d , q = k_2 d ; k_1 , k_2 \in \mathbb{Z}\frac{p}{q} = \frac{k_1}{k_2}。 其中\frac{k_1}{k_2}\frac{p}{q}的最简分数。

最简分数例如\frac{1}{3}\frac{4}{19}\frac{198}{17}。而\frac{6}{4}不是,因为(6,4) = 2,因而\frac{6}{4} = \frac{3}{2}

英语百科

Irreducible fraction 最简分数

An irreducible fraction (or fraction in lowest terms or reduced fraction) is a fraction in which the numerator and denominator are integers that have no other common divisors than 1 (and -1, when negative numbers are considered). In other words, a fraction ⁄b is irreducible if and only if a and b are coprime, that is, if a and b have a greatest common divisor of 1. In higher mathematics, "irreducible fraction" may also refer to rational fractions such that the numerator and the denominator are coprime polynomials. Every positive rational number can be represented as an irreducible fraction in exactly one way.

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更新时间:2025/6/20 4:53:30