MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  wif Structured version   Visualization version   Unicode version
Syntax Definition wif 1012
Description: Extend class notation to include the conditional operator for propositions.
Hypotheses
Ref Expression
wph wff ph
wps wff ps
wch wff ch
Assertion
Ref Expression
wif wff if- ( ph , ps , ch )
See definition df-ifp 1013 for more information.
Colors of variables: wff setvar class
  Copyright terms: Public domain W3C validator