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Syntax Definition wf 4979
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 4987 for more information.

Colors of variables: wff set class
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