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Syntax Definition crio 5797
Description: Extend class notation with restricted description binder.
Hypotheses
Ref Expression
wph wff 𝜑
vx setvar 𝑥
cA class 𝐴
Assertion
Ref Expression
crio class (℩𝑥 ∈ 𝐴 𝜑)
See definition df-riota 5798 for more information.
Colors of variables: wff set class
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