class inclusion

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class inclusion

set theory

Also known as: set inclusion

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formal logic
Set theory
The relation of class inclusion, however (to be carefully distinguished from class membership), is transitive. A class x is said to be included in a class y (written x ⊆ y) if and only if every member of x is also a member of y. (This is not…
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The relation of class inclusion, however (to be carefully distinguished from class membership), is transitive. A class x is said to be included in a class y (written x ⊆ y) if and only if every member of x is also a member of y. (This is not…
Read More