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Theorem oteqex 3545
Description: Equivalence of existence implied by equality of ordered triples.
Assertion
Ref Expression
oteqex |- (<.<.A, B>., C>. = <.<.R, S>., T>. -> (A e. _V <-> R e. _V))

Proof of Theorem oteqex
StepHypRef Expression
1 opex 3527 . . 3 |- <.A, B>. e. _V
21opth1 3531 . 2 |- (<.<.A, B>., C>. = <.<.R, S>., T>. -> <.A, B>. = <.R, S>.)
3 opeqex 3544 . 2 |- (<.A, B>. = <.R, S>. -> (A e. _V <-> R e. _V))
42, 3syl 12 1 |- (<.<.A, B>., C>. = <.<.R, S>., T>. -> (A e. _V <-> R e. _V))
Colors of variables: wff set class
Syntax hints:   -> wi 3   <-> wb 163   = wceq 1298   e. wcel 1300  _Vcvv 2292  <.cop 3046
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 1304  ax-gen 1305  ax-8 1306  ax-9 1307  ax-10 1308  ax-11 1309  ax-12 1310  ax-14 1312  ax-17 1317  ax-4 1319  ax-5o 1321  ax-6o 1324  ax-9o 1481  ax-10o 1500  ax-16 1580  ax-11o 1588  ax-ext 1865  ax-sep 3438  ax-nul 3445  ax-pow 3481  ax-pr 3524
This theorem depends on definitions:  df-bi 164  df-or 241  df-an 242  df-ex 1327  df-sb 1536  df-clab 1872  df-cleq 1877  df-clel 1880  df-ne 2019  df-v 2294  df-dif 2597  df-un 2600  df-in 2603  df-ss 2605  df-nul 2876  df-pw 3035  df-sn 3049  df-pr 3050  df-op 3053
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