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Theorem mpoeq3ia 5829
 Description: An equality inference for the maps-to notation. (Contributed by Mario Carneiro, 16-Dec-2013.)
Hypothesis
Ref Expression
mpoeq3ia.1 ((𝑥𝐴𝑦𝐵) → 𝐶 = 𝐷)
Assertion
Ref Expression
mpoeq3ia (𝑥𝐴, 𝑦𝐵𝐶) = (𝑥𝐴, 𝑦𝐵𝐷)

Proof of Theorem mpoeq3ia
StepHypRef Expression
1 mpoeq3ia.1 . . . 4 ((𝑥𝐴𝑦𝐵) → 𝐶 = 𝐷)
213adant1 999 . . 3 ((⊤ ∧ 𝑥𝐴𝑦𝐵) → 𝐶 = 𝐷)
32mpoeq3dva 5828 . 2 (⊤ → (𝑥𝐴, 𝑦𝐵𝐶) = (𝑥𝐴, 𝑦𝐵𝐷))
43mptru 1340 1 (𝑥𝐴, 𝑦𝐵𝐶) = (𝑥𝐴, 𝑦𝐵𝐷)
 Colors of variables: wff set class Syntax hints:   → wi 4   ∧ wa 103   = wceq 1331  ⊤wtru 1332   ∈ wcel 1480   ∈ cmpo 5769 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 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-11 1484  ax-4 1487  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2119 This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-clab 2124  df-cleq 2130  df-oprab 5771  df-mpo 5772 This theorem is referenced by:  mpodifsnif  5857  mposnif  5858  oprab2co  6108  genpdf  7309  dfioo2  9750  iseqvalcbv  10223  divcnap  12713
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