MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  wfr Structured version   Unicode version
Syntax Definition wfr 4676
Description: Extend wff notation to include the well-founded predicate. Read: ' R is a well-founded relation on A.'
Hypotheses
Ref Expression
cA class A
cR class R
Assertion
Ref Expression
wfr wff R Fr A
See definition df-fr 4679 for more information.
Colors of variables: wff setvar class
  Copyright terms: Public domain W3C validator