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Theorem dfvd3anir 45365
Description: Right-to-left inference form of dfvd3an 45363. (Contributed by Alan Sare, 13-Jun-2015.) (Proof modification is discouraged.) (New usage is discouraged.)
Hypothesis
Ref Expression
dfvd3anir.1 ((𝜑𝜓𝜒) → 𝜃)
Assertion
Ref Expression
dfvd3anir (   (   𝜑   ,   𝜓   ,   𝜒   )   ▶   𝜃   )

Proof of Theorem dfvd3anir
StepHypRef Expression
1 dfvd3anir.1 . 2 ((𝜑𝜓𝜒) → 𝜃)
2 dfvd3an 45363 . 2 ((   (   𝜑   ,   𝜓   ,   𝜒   )   ▶   𝜃   ) ↔ ((𝜑𝜓𝜒) → 𝜃))
31, 2mpbir 234 1 (   (   𝜑   ,   𝜓   ,   𝜒   )   ▶   𝜃   )
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  w3a 1103  (   wvd1 45338  (   wvhc3 45357
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This proof depends on definitions:  df-bi 210  df-vd1 45339  df-vhc3 45358
This theorem is used by:  el0321old  45485  el123  45532
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