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绝对值

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Also known as absolute value function, absolute value of real number, modulus, absolute value of a real number, abs, abs()

nonnegative number with the same magnitude as a given real number

AI overview

The absolute value of a number is its distance from zero on the number line, always expressed as a nonnegative (zero or positive) value. It matters because it lets us measure magnitude or "size" without worrying about whether a number is positive or negative.

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Within Vinony's link graph, 绝对值 is referenced by 599 other articles, and connects out to metric space, maxima and minima and sign.

It is catalogued under topics including Norms (mathematics), Real numbers and Special functions.

Its subject is documented across 77 Wikipedia language editions.

Described at

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Wikidata facts

Subclass of: function of a real variable
Image: AbsoluteValueDiagram.svg

Show 8 more facts

different from: magnitude of a complex number
definition domain: set of real numbers
short name: abs
Stack Exchange tag: stackoverflow.com/tags/absolute-value
Commons category: Absolute value
Commons gallery: Absolute value
maintained by WikiProject: WikiProject Mathematics
described at URL: andreailmatematico.it/matematica/dalle-equazioni-ai-primi-studi-di-funzione/funzione-modulo-o-valore-assoluto

Sources (3)

via Wikidata · CC0

Article · 中文

在数学中，实数的绝对值或模，记号为，是指去掉的符号所得的非负值。若是正数，则；若是负数（则是正数），则；零的绝对值为零（）。例如，和的绝对值都是。绝对值可看作该数和零之间的距离。绝对值的定义也可以从实数扩展到复数、四元数、、域、向量空间等范围。在数学和物理中，绝对值与量、距离、范数等概念密切相关。

Abstract from DBpedia / Wikipedia · CC BY-SA

Gallery (4)

Categories

Norms (mathematics)Real numbers Special functions