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Theorem f1rn 5532
Description: The range of a one-to-one mapping. (Contributed by BJ, 6-Jul-2022.)
Assertion
Ref Expression
f1rn  |-  ( F : A -1-1-> B  ->  ran  F  C_  B )

Proof of Theorem f1rn
StepHypRef Expression
1 f1f 5531 . 2  |-  ( F : A -1-1-> B  ->  F : A --> B )
2 frn 5482 . 2  |-  ( F : A --> B  ->  ran  F  C_  B )
31, 2syl 14 1  |-  ( F : A -1-1-> B  ->  ran  F  C_  B )
Colors of variables: wff set class
Syntax hints:    -> wi 4    C_ wss 3197   ran crn 4720   -->wf 5314   -1-1->wf1 5315
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107
This theorem depends on definitions:  df-bi 117  df-f 5322  df-f1 5323
This theorem is referenced by:  fun11iun  5593  f1dmex  6261  f1finf1o  7114  caserel  7254  djudom  7260  exmidfodomrlemim  7379  usgruspgrben  15984  domomsubct  16367
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