Singleton set: Difference between revisions
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imported>Richard Pinch m (Singleton moved to Singleton set: more precise title, someone may write a Bridge article one day) |
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In [[set theory]], a '''singleton''' is a [[set (mathematics)|set]] with exactly one element: | In [[set theory]], a '''singleton''' is a [[set (mathematics)|set]] with exactly one element: | ||
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We have | We have | ||
:<math>x \in \{ a \} \Leftrightarrow x = a . \,</math> | :<math>x \in \{ a \} \Leftrightarrow x = a . \,</math>[[Category:Suggestion Bot Tag]] | ||
