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Syntax Definition wf 4821
Description: Extend the definition of a wff to include the function predicate with domain and codomain. (Read: 𝐹 maps A into B.)
Hypotheses
Ref Expression
cA class A
cB class B
cF class 𝐹
Assertion
Ref Expression
wf wff 𝐹:AB

See definition df-f 4829 for more information.

Colors of variables: wff set class
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