# 0

A 0 is a natural number preceded by -1 and followed by 1.

**AKA:**Zero.**Example(s):**- [math]2-2[/math]

**See:**Integer, Empty Set, Zero Vector, Zero Matrix, Zero (number), Numerical Digit, Numeral System, Additive Identity.

## References

### 2014

- (Wikipedia, 2014) ⇒ http://en.wikipedia.org/wiki/0_(number) Retrieved:2014-11-12.
**0**(**zero**; BrE: or AmE: ) is both a number^{[1]}and the numerical digit used to represent that number in numerals. It fulfills a central role in mathematics as the additive identity of the integers, real numbers, and many other algebraic structures. As a digit, 0 is used as a placeholder in place value systems. In the English language, 0 may be called**zero**, nought or (US)**naught**, nil, or — in contexts where at least one adjacent digit distinguishes it from the letter "O" —**oh**or o**(). Informal or slang terms for zero include**zilch and**zip**.*Ought*or*aught*() has also been used historically.^{[2]}