# Difference between revisions of "Negative number"

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A [[real number]] (and thus [[integer]], [[rational number]] or [[irrational number]]) is '''negative''' if it is less than [[zero (constant) | zero]]. | A [[real number]] (and thus [[integer]], [[rational number]] or [[irrational number]]) is '''negative''' if it is less than [[zero (constant) | zero]]. | ||

− | '''The | + | == Overview == |

+ | '''The negation''' (or ''additive inverse'') of a number is the number which, when added to that number, gives zero. Note that this definition extends beyond the real numbers to include the [[complex number]]s (and, more generally, to any additive [[group]]). The negative of a negative real number is a [[positive number]]. The negation of zero is zero. | ||

==See Also== | ==See Also== |

## Revision as of 13:49, 5 July 2019

A real number (and thus integer, rational number or irrational number) is **negative** if it is less than zero.

## Overview

**The negation** (or *additive inverse*) of a number is the number which, when added to that number, gives zero. Note that this definition extends beyond the real numbers to include the complex numbers (and, more generally, to any additive group). The negative of a negative real number is a positive number. The negation of zero is zero.

## See Also

*This article is a stub. Help us out by expanding it.*