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Theorem dmv 4494
Description: The domain of the universe is the universe. (Contributed by NM, 8-Aug-2003.)
Assertion
Ref Expression
dmv dom V = V

Proof of Theorem dmv
StepHypRef Expression
1 ssv 2959 . 2 dom V ⊆ V
2 dmi 4493 . . 3 dom I = V
3 ssv 2959 . . . 4 I ⊆ V
4 dmss 4477 . . . 4 ( I ⊆ V → dom I ⊆ dom V)
53, 4ax-mp 7 . . 3 dom I ⊆ dom V
62, 5eqsstr3i 2970 . 2 V ⊆ dom V
71, 6eqssi 2955 1 dom V = V
Colors of variables: wff set class
Syntax hints:   = wceq 1242  Vcvv 2551  wss 2911   I cid 4016  dom cdm 4288
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 629  ax-5 1333  ax-7 1334  ax-gen 1335  ax-ie1 1379  ax-ie2 1380  ax-8 1392  ax-10 1393  ax-11 1394  ax-i12 1395  ax-bndl 1396  ax-4 1397  ax-14 1402  ax-17 1416  ax-i9 1420  ax-ial 1424  ax-i5r 1425  ax-ext 2019  ax-sep 3866  ax-pow 3918  ax-pr 3935
This theorem depends on definitions:  df-bi 110  df-3an 886  df-tru 1245  df-nf 1347  df-sb 1643  df-eu 1900  df-mo 1901  df-clab 2024  df-cleq 2030  df-clel 2033  df-nfc 2164  df-ral 2305  df-rex 2306  df-v 2553  df-un 2916  df-in 2918  df-ss 2925  df-pw 3353  df-sn 3373  df-pr 3374  df-op 3376  df-br 3756  df-opab 3810  df-id 4021  df-xp 4294  df-rel 4295  df-dm 4298
This theorem is referenced by: (None)
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