FANDOM


A set $ A $ is a subset of a set $ B $ if all of the elements in $ A $ is also in $ B $ . Note that $ A $ may be equal to $ B $ .

This relationship is denoted by $ A\subseteq B $ .

Proper subset

A set $ A $ is a proper subset of a set $ B $ if $ A $ is a subset of $ B $ but $ A\ne B $ .

This relationship is denoted by $ A\subset B $ .


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