HomeHome Metamath Proof Explorer < Previous   Next >
Related theorems
Unicode version
Syntax Definition wnand 1229
Description: Extend wff definition to include 'nand'.
Hypotheses
Ref Expression
wph wff ph
wps wff ps
Assertion
Ref Expression
wnand wff (ph -/\ ps)
See definition df-nand 1230 for more information.
Colors of variables: wff set class
Copyright terms: Public domain