MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  wcdeq Structured version   Unicode version

Syntax Definition wcdeq 3146
Description: Extend wff notation to include conditional equality. This is a technical device used in the proof that 
F/ is the not-free predicate, and that definitions are conservative as a result.
Ref Expression
wph  wff  ph
vx  set  x
vy  set  y
Ref Expression
wcdeq  wff CondEq ( x  =  y  ->  ph )

See definition df-cdeq 3147 for more information.

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