MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  wnf Structured version   Visualization version   Unicode version
Syntax Definition wnf 1708
Description: Extend wff definition to include the not-free predicate.
Hypotheses
Ref Expression
wph wff ph
vx setvar x
Assertion
Ref Expression
wnf wff F/ x ph
See definition df-nf 1710 for more information.
Colors of variables: wff setvar class
  Copyright terms: Public domain W3C validator