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Singleton (mathematics)

In mathematics, a singleton (also known as a unit set or one-point set) is a set with exactly one element. For example, the set { 0 } {\displaystyle \{0\}} is a singleton whose single element is 0 {\displaystyle 0} .

Measurement, Properties & In category theory

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Properties

21 related topics

In category theory

8 related topics

Definition in Principia Mathematica

4 related topics

Definition by indicator functions

2 related topics

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Properties

In category theory

Definition by indicator functions

Definition in Principia Mathematica

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Singleton (mathematics)

Nodes45
Edges44
Triples0
Avg. degree1.96
Density0.044444
Components1

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Important terminology

set singleton displaystyle element category every terminal sets class theory definition singletons objects single function ultrafilter also mathematics contains number

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