wfr - Metamath Proof Explorer

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Syntax Definition wfr 5541

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 5544 for more information.

Colors of variables: wff setvar class