# Singleton

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A Singleton is a non-empty set with one member.

**AKA:**Unit Set.**Example(s):****Counter-Example(s):**- an n-Aray Set.

**See:**Unique, Tuple, Sequence.

## References

### 2014

- (Wikipedia, 2014) ⇒ http://en.wikipedia.org/wiki/Singleton_(mathematics) Retrieved:2014-1-12.
- In mathematics, a
**singleton**, also known as a unit set,^{[1]}is a set with exactly one element. For example, the set {0} is a singleton.The term is also used for a 1-tuple (a sequence with one element).

- In mathematics, a

- ↑ Stoll, Robert (1961).
*Sets, Logic and Axiomatic Theories*. W. H. Freeman and Company. pp. 5–6.