MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  cio Structured version   Visualization version   GIF version

Syntax Definition cio 6386
Description: Extend class notation with Russell's definition description binder (inverted iota).
Hypotheses
Ref Expression
wph wff 𝜑
vx setvar 𝑥
Assertion
Ref Expression
cio class (℩𝑥𝜑)

See definition df-iota 6388 for more information.

Colors of variables: wff setvar class
  Copyright terms: Public domain W3C validator