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Theorem ifpid3g 40371
 Description: Restate wff as conditional logic operator. (Contributed by RP, 20-Apr-2020.)
Assertion
Ref Expression
ifpid3g ((𝜒 ↔ if-(𝜑, 𝜓, 𝜒)) ↔ (((𝜑𝜓) → 𝜒) ∧ ((𝜑𝜒) → 𝜓)))

Proof of Theorem ifpid3g
StepHypRef Expression
1 olc 865 . . 3 (𝜒 → (𝜑𝜒))
21, 1pm3.2i 474 . 2 ((𝜒 → (𝜑𝜒)) ∧ (𝜒 → (𝜑𝜒)))
3 ifpidg 40370 . 2 ((𝜒 ↔ if-(𝜑, 𝜓, 𝜒)) ↔ ((((𝜑𝜓) → 𝜒) ∧ ((𝜑𝜒) → 𝜓)) ∧ ((𝜒 → (𝜑𝜒)) ∧ (𝜒 → (𝜑𝜒)))))
42, 3mpbiran2 709 1 ((𝜒 ↔ if-(𝜑, 𝜓, 𝜒)) ↔ (((𝜑𝜓) → 𝜒) ∧ ((𝜑𝜒) → 𝜓)))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 399   ∨ wo 844  if-wif 1058 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 210  df-an 400  df-or 845  df-ifp 1059 This theorem is referenced by: (None)
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