Ivan Shishkin, Birch Grove

Singleton

Definition / Set theory / Usable

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Usable. This concept is clear enough to use, but has not yet been reviewed by another trusted user.

A singleton is a set with a single element.

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  • Are the following sets singletons? A={7}A=\{7\}, B={1,14}B=\{1,14\}, C={(1,2)}C=\{(1,2)\}.

    Open exercise
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