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Theorem rexralbidv 2464
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 2438 . 2 (𝜑 → (∀𝑦𝐵 𝜓 ↔ ∀𝑦𝐵 𝜒))
32rexbidv 2439 1 (𝜑 → (∃𝑥𝐴𝑦𝐵 𝜓 ↔ ∃𝑥𝐴𝑦𝐵 𝜒))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 104  wral 2417  wrex 2418
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1424  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-4 1488  ax-17 1507  ax-ial 1515
This theorem depends on definitions:  df-bi 116  df-nf 1438  df-ral 2422  df-rex 2423
This theorem is referenced by:  caucvgpr  7514  caucvgprpr  7544  caucvgsrlemgt1  7627  caucvgsrlemoffres  7632  axcaucvglemres  7731  cvg1nlemres  10789  rexfiuz  10793  resqrexlemgt0  10824  resqrexlemoverl  10825  resqrexlemglsq  10826  resqrexlemsqa  10828  resqrexlemex  10829  cau3lem  10918  caubnd2  10921  climi  11088  2clim  11102  ennnfonelemim  11973  lmcvg  12425  lmss  12454  txlm  12487  metcnpi  12723  metcnpi2  12724  elcncf  12768  cncfi  12773  limcimo  12842  cnplimclemr  12846  limccoap  12855
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