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

Syntax Definition wfr 4672
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 4675 for more information.

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