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Syntax Definition wfn 4840
Description: Extend the definition of a wff to include the function predicate with a domain. (Read: A is a function on B.)
Hypotheses
Ref Expression
cA class A
cB class B
Assertion
Ref Expression
wfn wff A Fn B

See definition df-fn 4848 for more information.

Colors of variables: wff set class
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