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| Mirrors > Home > ILE Home > Th. List > crio | GIF version | ||
| Description: Extend class notation with restricted description binder. | 
| Ref | Expression | 
|---|---|
| wph | wff 𝜑 | 
| vx | setvar 𝑥 | 
| cA | class 𝐴 | 
| Ref | Expression | 
|---|---|
| crio | class (℩𝑥 ∈ 𝐴 𝜑) | 
| Colors of variables: wff set class | 
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