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Mirrors > Home > ILE Home > Th. List > f1dm | Unicode version |
Description: The domain of a one-to-one mapping. (Contributed by NM, 8-Mar-2014.) |
Ref | Expression |
---|---|
f1dm |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1fn 5338 |
. 2
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2 | fndm 5230 |
. 2
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3 | 1, 2 | syl 14 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 |
This theorem depends on definitions: df-bi 116 df-fn 5134 df-f 5135 df-f1 5136 |
This theorem is referenced by: fun11iun 5396 tposf12 6174 f1dmvrnfibi 6840 f1vrnfibi 6841 exmidfodomrlemim 7074 hmeoimaf1o 12522 exmidsbthrlem 13392 |
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