TOPICS
Search

Singleton Set


A set having exactly one element a. A singleton set is denoted by {a} and is the simplest example of a nonempty set.


See also

Empty Set, Nonempty Set, Singleton Function

This entry contributed by Margherita Barile

Explore with Wolfram|Alpha

Cite this as:

Barile, Margherita. "Singleton Set." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/SingletonSet.html

Subject classifications