## ::−1

### ::concepts

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In mathematics, **−1** is the additive inverse of 1, that is, the number that when added to 1 gives the additive identity element, 0. It is the negative integer greater than negative two (−2) and less than 0.

Negative one bears relation to Euler's identity since <math>e^{i \pi} = -1.\!</math>

In computer science, **−1** is a common initial value for integers and is also used to show that a variable contains no useful information.

**Negative one** has some similar but slightly different properties to positive one.<ref>Mathematical analysis and applications

By Jayant V. Deshpande, ISBN 1-84265-189-7</ref>

**−1 sections**

Intro Algebraic properties Exponentiation to negative integers Inductive dimension Computer representation References

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Minus::number ''x''::negative Integers::inverse Complex::equation Using::negative Symbol::integer

{{#invoke:Hatnote|hatnote}}
{{#invoke:Infobox|infobox}}
In mathematics, **−1** is the additive inverse of 1, that is, the number that when added to 1 gives the additive identity element, 0. It is the negative integer greater than negative two (−2) and less than 0.

Negative one bears relation to Euler's identity since <math>e^{i \pi} = -1.\!</math>

In computer science, **−1** is a common initial value for integers and is also used to show that a variable contains no useful information.

**Negative one** has some similar but slightly different properties to positive one.<ref>Mathematical analysis and applications

By Jayant V. Deshpande, ISBN 1-84265-189-7</ref>

**−1 sections**

Intro Algebraic properties Exponentiation to negative integers Inductive dimension Computer representation References

PREVIOUS: Intro | NEXT: Algebraic properties |

<< | >> |