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Mirrors > Home > NFE Home > Th. List > f1dm | Unicode version |
Description: The domain of a one-to-one mapping. (Contributed by set.mm contributors, 8-Mar-2014.) |
Ref | Expression |
---|---|
f1dm |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1fn 5259 |
. 2
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2 | fndm 5182 |
. 2
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3 | 1, 2 | syl 15 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-3 7 ax-mp 8 |
This theorem depends on definitions: df-bi 177 df-an 360 df-fn 4790 df-f 4791 df-f1 4792 |
This theorem is referenced by: fun11iun 5305 |
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