ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  eleq12d GIF version

Theorem eleq12d 2302
Description: Deduction from equality to equivalence of membership. (Contributed by NM, 31-May-1994.)
Hypotheses
Ref Expression
eleq1d.1 (𝜑𝐴 = 𝐵)
eleq12d.2 (𝜑𝐶 = 𝐷)
Assertion
Ref Expression
eleq12d (𝜑 → (𝐴𝐶𝐵𝐷))

Proof of Theorem eleq12d
StepHypRef Expression
1 eleq12d.2 . . 3 (𝜑𝐶 = 𝐷)
21eleq2d 2301 . 2 (𝜑 → (𝐴𝐶𝐴𝐷))
3 eleq1d.1 . . 3 (𝜑𝐴 = 𝐵)
43eleq1d 2300 . 2 (𝜑 → (𝐴𝐷𝐵𝐷))
52, 4bitrd 188 1 (𝜑 → (𝐴𝐶𝐵𝐷))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1398  wcel 2202
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  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-cleq 2224  df-clel 2227
This theorem is referenced by:  cbvraldva2  2775  cbvrexdva2  2776  cdeqel  3028  ru  3031  sbceqbid  3039  sbcel12g  3143  cbvralcsf  3191  cbvrexcsf  3192  cbvreucsf  3193  cbvrabcsf  3194  onintexmid  4677  elvvuni  4796  elrnmpt1  4989  canth  5979  smoeq  6499  smores  6501  smores2  6503  iordsmo  6506  nnaordi  6719  nnaordr  6721  fvixp  6915  cbvixp  6927  mptelixpg  6946  opabfi  7175  exmidaclem  7466  cc1  7527  cc2lem  7528  cc3  7530  ltapig  7601  ltmpig  7602  fzsubel  10338  elfzp1b  10375  wrd2ind  11351  ennnfonelemg  13085  ennnfonelemp1  13088  ennnfonelemnn0  13104  ctiunctlemu1st  13116  ctiunctlemu2nd  13117  ctiunctlemudc  13119  ctiunctlemfo  13121  prdsbasprj  13426  xpsfrnel  13488  ismgm  13501  mgm1  13514  issgrpd  13556  ismndd  13581  eqgfval  13870  ringcl  14088  unitinvcl  14199  aprval  14358  aprap  14362  islmodd  14369  rspcl  14567  rnglidlmmgm  14572  zndvds  14725  istps  14823  tpspropd  14827  eltpsg  14831  isms  15244  mspropd  15269  cnlimci  15464  depindlem2  16428
  Copyright terms: Public domain W3C validator