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Syntax Definition wfr 4810
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 4813 for more information.
Colors of variables: wff setvar class
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