Theorem mpbir3and 1087

Description: Detach a conjunction of truths in a biconditional. (Contributed by Mario Carneiro, 11-May-2014.)

Hypotheses

Ref	Expression
mpbir3and.1	⊢ (𝜑 → 𝜒)
mpbir3and.2	⊢ (𝜑 → 𝜃)
mpbir3and.3	⊢ (𝜑 → 𝜏)
mpbir3and.4	⊢ (𝜑 → (𝜓 ↔ (𝜒 ∧ 𝜃 ∧ 𝜏)))

Assertion

Ref	Expression
mpbir3and	⊢ (𝜑 → 𝜓)

Proof of Theorem mpbir3and

Step	Hyp	Ref	Expression
1		mpbir3and.1	. . 3 ⊢ (𝜑 → 𝜒)
2		mpbir3and.2	. . 3 ⊢ (𝜑 → 𝜃)
3		mpbir3and.3	. . 3 ⊢ (𝜑 → 𝜏)
4	1, 2, 3	3jca 1084	. 2 ⊢ (𝜑 → (𝜒 ∧ 𝜃 ∧ 𝜏))
5		mpbir3and.4	. 2 ⊢ (𝜑 → (𝜓 ↔ (𝜒 ∧ 𝜃 ∧ 𝜏)))
6	4, 5	mpbird 156	1 ⊢ (𝜑 → 𝜓)

Syntax hints:   → wi 4   ↔ wb 98   ∧ w3a 885

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101

This theorem depends on definitions:  df-bi 110  df-3an 887

This theorem is referenced by:  ixxss1  8773  ixxss2  8774  ixxss12  8775  ubioc1  8798  lbico1  8799  lbicc2  8852  ubicc2  8853  modqelico  9176