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Syntax Definition crab 3436
Description: Extend class notation to include the restricted class abstraction (class builder).
Hypotheses
Ref Expression
wph wff 𝜑
vx setvar 𝑥
cA class 𝐴
Assertion
Ref Expression
crab class {𝑥 ∈ 𝐴 ∣ 𝜑}
See definition df-rab 3437 for more information.
Colors of variables: wff setvar class
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