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Theorem rexralbidv 2576
Description: Formula-building rule for restricted quantifiers (deduction form). (Contributed by NM, 28-Jan-2006.)
Hypothesis
Ref Expression
2ralbidv.1 (𝜑 → (𝜓𝜒))
Assertion
Ref Expression
rexralbidv (𝜑 → (∃𝑥𝐴𝑦𝐵 𝜓 ↔ ∃𝑥𝐴𝑦𝐵 𝜒))
Distinct variable groups:   𝜑,𝑥   𝜑,𝑦
Allowed substitution hints:   𝜓(𝑥, 𝑦)   𝜒(𝑥, 𝑦)   𝐴(𝑥, 𝑦)   𝐵(𝑥, 𝑦)

Proof of Theorem rexralbidv
StepHypRef Expression
1 2ralbidv.1 . . 3 (𝜑 → (𝜓𝜒))
21ralbidv 2550 . 2 (𝜑 → (∀𝑦𝐵 𝜓 ↔ ∀𝑦𝐵 𝜒))
32rexbidv 2551 1 (𝜑 → (∃𝑥𝐴𝑦𝐵 𝜓 ↔ ∃𝑥𝐴𝑦𝐵 𝜒))
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wb 105  wral 2528  wrex 2529
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-4 1563  ax-17 1579  ax-ial 1587
This proof depends on definitions:  df-bi 117  df-nf 1514  df-ral 2533  df-rex 2534
This theorem is used by:  caucvgpr  8049  caucvgprpr  8079  caucvgsrlemgt1  8162  caucvgsrlemoffres  8167  axcaucvglemres  8266  cvg1nlemres  11751  rexfiuz  11755  resqrexlemgt0  11786  resqrexlemoverl  11787  resqrexlemglsq  11788  resqrexlemsqa  11790  resqrexlemex  11791  cau3lem  11880  caubnd2  11883  climi  12053  2clim  12067  ennnfonelemim  13315  mplelbascoe  15083  lmcvg  15318  lmss  15347  txlm  15380  metcnpi  15616  metcnpi2  15617  elcncf  15674  cncfi  15679  limcimo  15766  cnplimclemr  15770  limccoap  15779
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