ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  2ralbidv GIF version

Theorem 2ralbidv 2568
Description: Formula-building rule for restricted universal quantifiers (deduction form). (Contributed by NM, 28-Jan-2006.) (Revised by Szymon Jaroszewicz, 16-Mar-2007.)
Hypothesis
Ref Expression
2ralbidv.1 (𝜑 → (𝜓𝜒))
Assertion
Ref Expression
2ralbidv (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 2ralbidv
StepHypRef Expression
1 2ralbidv.1 . . 3 (𝜑 → (𝜓𝜒))
21ralbidv 2544 . 2 (𝜑 → (∀𝑦𝐵 𝜓 ↔ ∀𝑦𝐵 𝜒))
32ralbidv 2544 1 (𝜑 → (∀𝑥𝐴𝑦𝐵 𝜓 ↔ ∀𝑥𝐴𝑦𝐵 𝜒))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105  wral 2522
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-4 1559  ax-17 1575
This theorem depends on definitions:  df-bi 117  df-nf 1510  df-ral 2527
This theorem is referenced by:  cbvral3v  2795  poeq1  4425  soeq1  4441  isoeq1  5980  isoeq2  5981  isoeq3  5982  fnmpoovd  6424  smoeq  6534  xpf1o  7110  papeq1  7573  papcotr  7577  tapeq1  7582  elinp  7805  cauappcvgpr  7993  seq3caopr2  10879  seqcaopr2g  10880  wrd2ind  11440  addcn2  12020  mulcn2  12022  sgrp1  13674  ismhm  13716  mhmex  13717  issubm  13727  isnsg  13955  nmznsg  13966  isghm  13996  iscmn  14046  ring1  14302  opprsubrngg  14457  issubrg3  14493  islmod  14565  lmodlema  14566  lsssetm  14630  islssmd  14633  islidlm  14753  ispsmet  15314  ismet  15335  isxmet  15336  addcncntoplem  15552  elcncf  15564  mpodvdsmulf1o  15984
  Copyright terms: Public domain W3C validator