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Theorem dmv 2546
Description: The domain of the universe is the universe.
Assertion
Ref Expression
dmv |- dom V = V

Proof of Theorem dmv
StepHypRef Expression
1 ssv 1520 . 2 |- dom V (_ V
2 dmi 2545 . . 3 |- dom I = V
3 ssv 1520 . . . 4 |- I (_ V
4 dmss 2530 . . . 4 |- (I (_ V -> dom I (_ dom V)
53, 4ax-mp 6 . . 3 |- dom I (_ dom V
62, 5eqsstr3 1531 . 2 |- V (_ dom V
71, 6eqssi 1517 1 |- dom V = V
Colors of variables: wff set class
Syntax hints:   = wceq 1091  Vcvv 1348   (_ wss 1487  Icid 2057  dom cdm 2410
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-clab 1093  df-cleq 1097  df-clel 1099  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-dm 2428
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