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Theorem f1ovi 2826
Description: The identity relation is a one-to-one onto function on the universe.
Assertion
Ref Expression
f1ovi |- I:V-1-1-onto->V

Proof of Theorem f1ovi
StepHypRef Expression
1 f1oi 2825 . 2 |- (I |` V):V-1-1-onto->V
2 reli 2500 . . . 4 |- Rel I
3 resid 2601 . . . 4 |- (Rel I -> (I |` V) = I)
42, 3ax-mp 6 . . 3 |- (I |` V) = I
5 f1oeq1 2795 . . 3 |- ((I |` V) = I -> ((I |` V):V-1-1-onto->V <-> I:V-1-1-onto->V))
64, 5ax-mp 6 . 2 |- ((I |` V):V-1-1-onto->V <-> I:V-1-1-onto->V)
71, 6mpbi 164 1 |- I:V-1-1-onto->V
Colors of variables: wff set class
Syntax hints:   <-> wb 127   = wceq 1091  Vcvv 1348  Icid 2057   |` cres 2412  Rel wrel 2415  -1-1-onto->wf1o 2421
This theorem is referenced by:  ncanth 2946
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-eu 1009  df-mo 1010  df-clab 1093  df-cleq 1097  df-clel 1099  df-rex 1206  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-br 2063  df-opab 2098  df-id 2125  df-xp 2424  df-rel 2425  df-cnv 2426  df-co 2427  df-dm 2428  df-rn 2429  df-res 2430  df-ima 2431  df-fun 2432  df-fn 2433  df-f 2434  df-f1 2435  df-fo 2436  df-f1o 2437
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