V2EX nonpositional

Nonpositional

Definition / 定义

nonpositional(形容词)非位置性的;不依赖位置的。常用于描述某种表示法、记号系统或特征不是靠“所在位置/位值”来决定意义或数值(例如某些非位值记数法)。该词也可在不同学科语境中引申为“不以位置为关键因素”。

Pronunciation / 发音

/nn pznl/

Examples / 例句

Roman numerals are a nonpositional numeral system.
罗马数字是一种非位置(非位值)的记数系统。

In a nonpositional representation, the same symbol keeps the same value regardless of where it appears, which can make calculation less efficient than in positional systems.
在非位置性的表示法中,同一个符号不论出现在何处都保持相同的值,因此在计算效率上往往不如位值制系统。

Etymology / 词源

non-(表示否定,“不、非”)+ positional(“位置的、与位置相关的”,源自 position “位置”)构成,字面意思就是“不与位置相关的”。在数学与语言学等学术语境里,它常用来对比 positional(位值的/位置性的) 体系。

Related Words /相关词

Literary Works / 文学作品与著作

  • Encyclopaedia Britannica(相关条目常讨论 positionalnonpositional 记数系统)
  • The Oxford Companion to Mathematics(在记数法/符号系统的讨论中常见该术语)
  • Concrete Mathematics(Graham, Knuth, Patashnik;涉及记号与表示法讨论的语境中可能出现此类术语)
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