Theorem mpbi2and 945

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 306	. 2 ⊢ (𝜑 → (𝜓 ∧ 𝜒))
4		mpbi2and.3	. 2 ⊢ (𝜑 → ((𝜓 ∧ 𝜒) ↔ 𝜃))
5	3, 4	mpbid 147	1 ⊢ (𝜑 → 𝜃)

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia3 108

This theorem depends on definitions:  df-bi 117

This theorem is referenced by:  supisoti  7085  remim  11044  resqrtcl  11213  divalgmod  12111  oddpwdclemxy  12364  divnumden  12391  numdensq  12397  prmdivdiv  12432  4sqlem7  12580  ismgmid2  13084  mnd1  13159  iscmnd  13506  imasring  13698  subrg1  13865  topgele  14351  lmcn2  14602