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  7040  remim  10904  resqrtcl  11073  divalgmod  11967  oddpwdclemxy  12204  divnumden  12231  numdensq  12237  prmdivdiv  12272  4sqlem7  12419  ismgmid2  12859  mnd1  12922  iscmnd  13254  imasring  13431  subrg1  13595  topgele  14006  lmcn2  14257