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Syntax Definition wfr 4250
Description: Extend wff notation to include the well-founded predicate. Read: ' 𝑅 is a well-founded relation on 𝐴.'
Ref Expression
cA class 𝐴
cR class 𝑅
Ref Expression
wfr wff 𝑅 Fr 𝐴

See definition df-frind 4254 for more information.

Colors of variables: wff set class
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