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Syntax Definition crab 2310
Description: Extend class notation to include the restricted class abstraction (class builder).
Ref Expression
wph wff 𝜑
vx setvar 𝑥
cA class 𝐴
Ref Expression
crab class {𝑥𝐴𝜑}

See definition df-rab 2315 for more information.

Colors of variables: wff set class
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