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Theorem cnvresid 6619
Description: Converse of a restricted identity function. (Contributed by FL, 4-Mar-2007.)
Assertion
Ref Expression
cnvresid ( I ↾ 𝐴) = ( I ↾ 𝐴)

Proof of Theorem cnvresid
StepHypRef Expression
1 cnvi 5875 . . 3 I = I
21eqcomi 2779 . 2 I = I
3 funi 6572 . . 3 Fun I
4 funeq 6560 . . 3 ( I = I → (Fun I ↔ Fun I ))
53, 4mpbii 236 . 2 ( I = I → Fun I )
6 funcnvres 6618 . . 3 (Fun I → ( I ↾ 𝐴) = ( I ↾ ( I “ 𝐴)))
7 imai 6080 . . . 4 ( I “ 𝐴) = 𝐴
81, 7reseq12i 5980 . . 3 ( I ↾ ( I “ 𝐴)) = ( I ↾ 𝐴)
96, 8eqtrdi 2821 . 2 (Fun I → ( I ↾ 𝐴) = ( I ↾ 𝐴))
102, 5, 9mp2b 10 1 ( I ↾ 𝐴) = ( I ↾ 𝐴)
Colors of variables: wff setvar class
Syntax hints:   = wceq 1568   I cid 5559  ccnv 5664  cres 5667  cima 5668  Fun wfun 6534
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1823  ax-4 1837  ax-5 1938  ax-6 1995  ax-7 2036  ax-8 2152  ax-9 2160  ax-12 2220  ax-ext 2742  ax-sep 5262  ax-pr 5408
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1571  df-fal 1581  df-ex 1808  df-sb 2099  df-mo 2574  df-eu 2604  df-clab 2749  df-cleq 2762  df-clel 2845  df-ral 3087  df-rex 3097  df-rab 3424  df-v 3464  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-br 5115  df-opab 5179  df-id 5560  df-xp 5671  df-rel 5672  df-cnv 5673  df-co 5674  df-dm 5675  df-rn 5676  df-res 5677  df-ima 5678  df-fun 6542
This theorem is referenced by:  fcoi1  6756  f1oiOLD  6864  relexpcnv  15075  tsrdir  18663  gicref  19345  ssidcn  23395  idqtop  23846  idhmeo  23913  bj-iminvid  37787  ltrncnvnid  40851  dihmeetlem1N  42014  dihglblem5apreN  42015  diophrw  43442  cnvrcl0  44303  relexpaddss  44396  imaidfu  49837
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