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Theorem rexralbidv 2559
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 2533 . 2 (𝜑 → (∀𝑦𝐵 𝜓 ↔ ∀𝑦𝐵 𝜒))
32rexbidv 2534 1 (𝜑 → (∃𝑥𝐴𝑦𝐵 𝜓 ↔ ∃𝑥𝐴𝑦𝐵 𝜒))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105  wral 2511  wrex 2512
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1496  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-4 1559  ax-17 1575  ax-ial 1583
This theorem depends on definitions:  df-bi 117  df-nf 1510  df-ral 2516  df-rex 2517
This theorem is referenced by:  caucvgpr  7945  caucvgprpr  7975  caucvgsrlemgt1  8058  caucvgsrlemoffres  8063  axcaucvglemres  8162  cvg1nlemres  11608  rexfiuz  11612  resqrexlemgt0  11643  resqrexlemoverl  11644  resqrexlemglsq  11645  resqrexlemsqa  11647  resqrexlemex  11648  cau3lem  11737  caubnd2  11740  climi  11910  2clim  11924  ennnfonelemim  13108  mplelbascoe  14776  lmcvg  15011  lmss  15040  txlm  15073  metcnpi  15309  metcnpi2  15310  elcncf  15367  cncfi  15372  limcimo  15459  cnplimclemr  15463  limccoap  15472
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