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::concepts

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 $e^{i \pi} = -1.\!$

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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