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Theorem rexralbidv 2556
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 2530 . 2 (𝜑 → (∀𝑦𝐵 𝜓 ↔ ∀𝑦𝐵 𝜒))
32rexbidv 2531 1 (𝜑 → (∃𝑥𝐴𝑦𝐵 𝜓 ↔ ∃𝑥𝐴𝑦𝐵 𝜒))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105  wral 2508  wrex 2509
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 1493  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-4 1556  ax-17 1572  ax-ial 1580
This theorem depends on definitions:  df-bi 117  df-nf 1507  df-ral 2513  df-rex 2514
This theorem is referenced by:  caucvgpr  7892  caucvgprpr  7922  caucvgsrlemgt1  8005  caucvgsrlemoffres  8010  axcaucvglemres  8109  cvg1nlemres  11536  rexfiuz  11540  resqrexlemgt0  11571  resqrexlemoverl  11572  resqrexlemglsq  11573  resqrexlemsqa  11575  resqrexlemex  11576  cau3lem  11665  caubnd2  11668  climi  11838  2clim  11852  ennnfonelemim  13035  mplelbascoe  14696  lmcvg  14931  lmss  14960  txlm  14993  metcnpi  15229  metcnpi2  15230  elcncf  15287  cncfi  15292  limcimo  15379  cnplimclemr  15383  limccoap  15392
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