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Syntax Definition wbr 3761
Description: Extend wff notation to include the general binary relation predicate. Note that the syntax is simply three class symbols in a row. Since binary relations are the only possible wff expressions consisting of three class expressions in a row, the syntax is unambiguous.
Hypotheses
Ref Expression
cA class 𝐴
cB class 𝐵
cR class 𝑅
Assertion
Ref Expression
wbr wff 𝐴𝑅𝐵

See definition df-br 3762 for more information.

Colors of variables: wff set class
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