Theorem mpbi2and 910

Description: Detach a conjunction of truths in a biconditional. (Contributed by NM, 6-Nov-2011.) (Proof shortened by Wolf Lammen, 24-Nov-2012.)

Hypotheses

Ref	Expression
mpbi2and.1	⊢ (𝜑 → 𝜓)
mpbi2and.2	⊢ (𝜑 → 𝜒)
mpbi2and.3	⊢ (𝜑 → ((𝜓 ∧ 𝜒) ↔ 𝜃))

Assertion

Ref	Expression
mpbi2and	⊢ (𝜑 → 𝜃)

Proof of Theorem mpbi2and

Step	Hyp	Ref	Expression
1		mpbi2and.1	. . 3 ⊢ (𝜑 → 𝜓)
2		mpbi2and.2	. . 3 ⊢ (𝜑 → 𝜒)
3	1, 2	jca 302	. 2 ⊢ (𝜑 → (𝜓 ∧ 𝜒))
4		mpbi2and.3	. 2 ⊢ (𝜑 → ((𝜓 ∧ 𝜒) ↔ 𝜃))
5	3, 4	mpbid 146	1 ⊢ (𝜑 → 𝜃)

Syntax hints:   → wi 4   ∧ wa 103   ↔ wb 104

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia3 107

This theorem depends on definitions:  df-bi 116

This theorem is referenced by:  supisoti  6849  remim  10525  resqrtcl  10693  divalgmod  11472  oddpwdclemxy  11692  divnumden  11719  numdensq  11725  topgele  12039  lmcn2  12291