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Theorem riotaeqbidv 5471
 Description: Equality deduction for restricted universal quantifier. (Contributed by NM, 15-Sep-2011.)
Hypotheses
Ref Expression
riotaeqbidv.1 (𝜑𝐴 = 𝐵)
riotaeqbidv.2 (𝜑 → (𝜓𝜒))
Assertion
Ref Expression
riotaeqbidv (𝜑 → (𝑥𝐴 𝜓) = (𝑥𝐵 𝜒))
Distinct variable group:   𝜑,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝜒(𝑥)   𝐴(𝑥)   𝐵(𝑥)

Proof of Theorem riotaeqbidv
StepHypRef Expression
1 riotaeqbidv.2 . . 3 (𝜑 → (𝜓𝜒))
21riotabidv 5470 . 2 (𝜑 → (𝑥𝐴 𝜓) = (𝑥𝐴 𝜒))
3 riotaeqbidv.1 . . 3 (𝜑𝐴 = 𝐵)
43riotaeqdv 5469 . 2 (𝜑 → (𝑥𝐴 𝜒) = (𝑥𝐵 𝜒))
52, 4eqtrd 2072 1 (𝜑 → (𝑥𝐴 𝜓) = (𝑥𝐵 𝜒))
 Colors of variables: wff set class Syntax hints:   → wi 4   ↔ wb 98   = wceq 1243  ℩crio 5467 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 630  ax-5 1336  ax-7 1337  ax-gen 1338  ax-ie1 1382  ax-ie2 1383  ax-8 1395  ax-10 1396  ax-11 1397  ax-i12 1398  ax-bndl 1399  ax-4 1400  ax-17 1419  ax-i9 1423  ax-ial 1427  ax-i5r 1428  ax-ext 2022 This theorem depends on definitions:  df-bi 110  df-tru 1246  df-nf 1350  df-sb 1646  df-clab 2027  df-cleq 2033  df-clel 2036  df-nfc 2167  df-rex 2312  df-uni 3581  df-iota 4867  df-riota 5468 This theorem is referenced by:  acexmidlemab  5506
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