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Theorem dmv 3322
Description: The domain of the universe is the universe.
Assertion
Ref Expression
dmv |- dom V = V

Proof of Theorem dmv
StepHypRef Expression
1 ssv 2077 . 2 |- dom V (_ V
2 dmi 3321 . . 3 |- dom I = V
3 ssv 2077 . . . 4 |- I (_ V
4 dmss 3305 . . . 4 |- (I (_ V -> dom I (_ dom V)
53, 4ax-mp 7 . . 3 |- dom I (_ dom V
62, 5eqsstr3 2088 . 2 |- V (_ dom V
71, 6eqssi 2074 1 |- dom V = V
Colors of variables: wff set class
Syntax hints:   = wceq 954  Vcvv 1807   (_ wss 2043  Icid 2826  dom cdm 3165
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 960  ax-gen 961  ax-8 962  ax-9 963  ax-10 964  ax-11 965  ax-12 966  ax-13 967  ax-14 968  ax-17 969  ax-4 971  ax-5o 973  ax-6o 976  ax-9o 1121  ax-10o 1138  ax-16 1208  ax-11o 1216  ax-ext 1457  ax-sep 2698  ax-pow 2737  ax-pr 2774
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 979  df-sb 1170  df-eu 1380  df-mo 1381  df-clab 1462  df-cleq 1467  df-clel 1470  df-ne 1584  df-v 1808  df-dif 2045  df-un 2046  df-in 2047  df-ss 2049  df-nul 2277  df-pw 2398  df-sn 2408  df-pr 2409  df-op 2412  df-br 2615  df-opab 2662  df-id 2830  df-xp 3179  df-rel 3180  df-dm 3183
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