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Mirrors > Home > NFE Home > Th. List > f1f | Unicode version |
Description: A one-to-one mapping is a mapping. (Contributed by set.mm contributors, 31-Dec-1996.) |
Ref | Expression |
---|---|
f1f |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-f1 4793 |
. 2
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2 | 1 | simplbi 446 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 177 df-an 360 df-f1 4793 |
This theorem is referenced by: f1fn 5260 f1ss 5263 f1of 5288 dff1o5 5296 fun11iun 5306 dflec3 6222 |
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