Theorem dfvd3ir 44949

Description: Right-to-left inference form of dfvd3 44947. (Contributed by Alan Sare, 14-Nov-2011.) (Proof modification is discouraged.) (New usage is discouraged.)

Hypothesis

Ref	Expression
dfvd3ir.1	⊢ (𝜑 → (𝜓 → (𝜒 → 𝜃)))

Assertion

Ref	Expression
dfvd3ir	⊢ (   𝜑   ,   𝜓   ,   𝜒   ▶   𝜃   )

Proof of Theorem dfvd3ir

Step	Hyp	Ref	Expression
1		dfvd3ir.1	. 2 ⊢ (𝜑 → (𝜓 → (𝜒 → 𝜃)))
2		dfvd3 44947	. 2 ⊢ ((   𝜑   ,   𝜓   ,   𝜒   ▶   𝜃   ) ↔ (𝜑 → (𝜓 → (𝜒 → 𝜃))))
3	1, 2	mpbir 231	1 ⊢ (   𝜑   ,   𝜓   ,   𝜒   ▶   𝜃   )

Syntax hints:   → wi 4  (   wvd3 44943

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 207  df-an 396  df-3an 1089  df-vd3 44946

This theorem is referenced by:  vd03  44955  vd13  44957  vd23  44958  in3an  44967  idn3  44971  gen31  44977  e223  44991  e333  45088  e233  45120  e323  45121