singleton
Sign in to saveAlso known as unit set, 1-tuple, single, monuple, monad
set with exactly one element
~5 min read
Encyclopedic overview
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 }
Excerpted from Wikipedia’s “singleton” article, available under the CC BY-SA 4.0 licence.