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Theorem f1odm 5290
Description: The domain of a one-to-one onto mapping. (Contributed by set.mm contributors, 8-Mar-2014.)
Assertion
Ref Expression
f1odm

Proof of Theorem f1odm
StepHypRef Expression
1 f1ofn 5288 . 2
2 fndm 5182 . 2
31, 2syl 15 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wceq 1642   cdm 4772   wfn 4776  wf1o 4780
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-fn 4790  df-f 4791  df-f1 4792  df-f1o 4794
This theorem is referenced by:  bren  6030  enpw1  6062  enmap1lem5  6073  nenpw1pwlem2  6085  ncdisjun  6136  sbthlem3  6205
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