Singleton set: Difference between revisions

Revision as of 07:04, 23 November 2008

In set theory, a singleton is a set with exactly one element:

\{a\}.\,

We have

x\in \{a\}\Leftrightarrow x=a.\,

Revision as of 07:03, 23 November 2008 (view source) imported>Richard Pinch (expanded slightly) ← Older edit	Revision as of 07:04, 23 November 2008 (view source) imported>Richard Pinch m (Singleton moved to Singleton set: more precise title, someone may write a Bridge article one day) Newer edit →
(No difference)