Theorem jcab 517

Description: Distributive law for implication over conjunction. Compare Theorem *4.76 of [WhiteheadRussell] p. 121. (Contributed by NM, 3-Apr-1994.) (Proof shortened by Wolf Lammen, 27-Nov-2013.)

Assertion

Ref	Expression
jcab	⊢ ((𝜑 → (𝜓 ∧ 𝜒)) ↔ ((𝜑 → 𝜓) ∧ (𝜑 → 𝜒)))

Proof of Theorem jcab

Step	Hyp	Ref	Expression
1		simpl 482	. . . 4 ⊢ ((𝜓 ∧ 𝜒) → 𝜓)
2	1	imim2i 16	. . 3 ⊢ ((𝜑 → (𝜓 ∧ 𝜒)) → (𝜑 → 𝜓))
3		simpr 484	. . . 4 ⊢ ((𝜓 ∧ 𝜒) → 𝜒)
4	3	imim2i 16	. . 3 ⊢ ((𝜑 → (𝜓 ∧ 𝜒)) → (𝜑 → 𝜒))
5	2, 4	jca 511	. 2 ⊢ ((𝜑 → (𝜓 ∧ 𝜒)) → ((𝜑 → 𝜓) ∧ (𝜑 → 𝜒)))
6		pm3.43 473	. 2 ⊢ (((𝜑 → 𝜓) ∧ (𝜑 → 𝜒)) → (𝜑 → (𝜓 ∧ 𝜒)))
7	5, 6	impbii 209	1 ⊢ ((𝜑 → (𝜓 ∧ 𝜒)) ↔ ((𝜑 → 𝜓) ∧ (𝜑 → 𝜒)))

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395

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 207  df-an 396

This theorem is referenced by:  pm4.76  518  pm5.44  542  ordi  1007  2mo2  2642  ssconb  4092  ssin  4189  2reu4lem  4472  tfr3  8318  trclfvcotr  14913  isprm2  16590  lgsquad2lem2  27321  ostthlem2  27564  pclclN  39929  ifpbibib  43542  elmapintrab  43608  elinintrab  43609  ismnuprim  44326