NFE Home New Foundations Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  NFE Home  >  Th. List  >  wo GIF version

Syntax Definition wo 357
Description: Extend wff definition to include disjunction ('or').
Ref Expression
wph wff φ
wps wff ψ
Ref Expression
wo wff (φ ψ)

See definition df-or 359 for more information.

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