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Mirrors > Home > ILE Home > Th. List > wf1 | GIF version |
Description: Extend the definition of a wff to include one-to-one functions. (Read: 𝐹 maps A one-to-one into B.) The notation ("1-1" above the arrow) is from Definition 6.15(5) of [TakeutiZaring] p. 27. |
Ref | Expression |
---|---|
cA | class A |
cB | class B |
cF | class 𝐹 |
Ref | Expression |
---|---|
wf1 | wff 𝐹:A–1-1→B |
Colors of variables: wff set class |
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