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Theorem raleqbi1dv 2761
Description: Equality deduction for restricted universal quantifier. (Contributed by NM, 16-Nov-1995.)
Hypothesis
Ref Expression
raleqd.1 (𝐴 = 𝐵 → (𝜑𝜓))
Assertion
Ref Expression
raleqbi1dv (𝐴 = 𝐵 → (∀𝑥𝐴 𝜑 ↔ ∀𝑥𝐵 𝜓))
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵
Allowed substitution hints:   𝜑(𝑥)   𝜓(𝑥)

Proof of Theorem raleqbi1dv
StepHypRef Expression
1 raleq 2749 . 2 (𝐴 = 𝐵 → (∀𝑥𝐴 𝜑 ↔ ∀𝑥𝐵 𝜑))
2 raleqd.1 . . 3 (𝐴 = 𝐵 → (𝜑𝜓))
32ralbidv 2550 . 2 (𝐴 = 𝐵 → (∀𝑥𝐵 𝜑 ↔ ∀𝑥𝐵 𝜓))
41, 3bitrd 188 1 (𝐴 = 𝐵 → (∀𝑥𝐴 𝜑 ↔ ∀𝑥𝐵 𝜓))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1402  wral 2528
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-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This theorem depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533
This theorem is referenced by:  frforeq2  4485  weeq2  4497  peano5  4740  isoeq4  6000  exmidomni  7472  papeq2  7600  tapeq2  7609  pitonn  8205  peano1nnnn  8209  peano2nnnn  8210  peano5nnnn  8249  peano5nni  9286  1nn  9294  peano2nn  9295  dfuzi  9735  mhmpropd  13750  issubm  13756  isghm  14023  ghmeql  14047  iscmn  14073  dfrhm2  14434  islssm  14666  islssmg  14667  istopg  15023  isbasisg  15068  basis2  15072  eltg2  15077  ispsmet  15347  ismet  15368  isxmet  15369  metrest  15530  cncfval  15596  bj-indeq  16869  bj-nntrans  16891
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