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Theorem int-eqprincd 37512
Description: PrincipleOfEquality generator rule. (Contributed by Stanislas Polu, 7-Apr-2020.)
Hypotheses
Ref Expression
int-eqprincd.1 (𝜑𝐴 = 𝐵)
int-eqprincd.2 (𝜑𝐶 = 𝐷)
Assertion
Ref Expression
int-eqprincd (𝜑 → (𝐴 + 𝐶) = (𝐵 + 𝐷))

Proof of Theorem int-eqprincd
StepHypRef Expression
1 int-eqprincd.1 . 2 (𝜑𝐴 = 𝐵)
2 int-eqprincd.2 . 2 (𝜑𝐶 = 𝐷)
31, 2oveq12d 6567 1 (𝜑 → (𝐴 + 𝐶) = (𝐵 + 𝐷))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1475  (class class class)co 6549   + caddc 9818
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590
This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-rex 2902  df-rab 2905  df-v 3175  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-iota 5768  df-fv 5812  df-ov 6552
This theorem is referenced by: (None)
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