V2EX prime power

Prime Power

释义 Definition

素数幂(prime power):指数形式为 p^k 的数,其中 p 是素数k 是正整数(k ≥ 1)。例如 8 = 2^3、27 = 3^3、25 = 5^2 都是素数幂。

发音 Pronunciation (IPA)

/pram par/

例句 Examples

8 is a prime power because it equals 2^3.
8 是素数幂,因为它等于 2^3。

Prime powers play a key role in number theory, especially when counting solutions modulo p^k.
素数幂在数论中很重要,尤其是在计算模 p^k 意义下解的个数时。

词源 Etymology

prime 源自拉丁语 primus(“第一、最初”),在数学中引申为“最基本的数”,即只能被 1 和自身整除的素数;power 源自古法语 poeir(“力量、能力”),在数学里表示“幂/乘方”。合起来 prime power 就是“素数的乘方”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • G. H. Hardy & E. M. Wright, An Introduction to the Theory of Numbers(《数论导引》)中多处使用“prime power”讨论整除性与同余问题。
  • Tom M. Apostol, Introduction to Analytic Number Theory(《解析数论导论》)中以 prime powers 描述算术函数(如欧拉函数、莫比乌斯函数)在 p^k 上的性质。
  • Kenneth H. Rosen, Elementary Number Theory and Its Applications(《初等数论及其应用》)在同余与群论相关章节常出现 prime power(如模 p^k 的结构)。
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