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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  11765  rexfiuz  11769  resqrexlemgt0  11800  resqrexlemoverl  11801  resqrexlemglsq  11802  resqrexlemsqa  11804  resqrexlemex  11805  cau3lem  11895  caubnd2  11898  climi  12069  2clim  12083  ennnfonelemim  13364  mplelbascoe  15132  lmcvg  15367  lmss  15396  txlm  15429  metcnpi  15665  metcnpi2  15666  elcncf  15723  cncfi  15728  limcimo  15815  cnplimclemr  15819  limccoap  15828
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