Theorem orim12da 980

Description: Deduce a disjunction from another one. Variation on orim12d 979. (Contributed by Thierry Arnoux, 18-May-2025.)

Hypotheses

Ref	Expression
orim12da.1	⊢ ((𝜑 ∧ 𝜓) → 𝜃)
orim12da.2	⊢ ((𝜑 ∧ 𝜒) → 𝜏)
orim12da.3	⊢ (𝜑 → (𝜓 ∨ 𝜒))

Assertion

Ref	Expression
orim12da	⊢ (𝜑 → (𝜃 ∨ 𝜏))

Proof of Theorem orim12da

Step	Hyp	Ref	Expression
1		orim12da.3	. 2 ⊢ (𝜑 → (𝜓 ∨ 𝜒))
2		orim12da.1	. . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝜃)
3	2	ex 417	. . 3 ⊢ (𝜑 → (𝜓 → 𝜃))
4		orim12da.2	. . . 4 ⊢ ((𝜑 ∧ 𝜒) → 𝜏)
5	4	ex 417	. . 3 ⊢ (𝜑 → (𝜒 → 𝜏))
6	3, 5	orim12d 979	. 2 ⊢ (𝜑 → ((𝜓 ∨ 𝜒) → (𝜃 ∨ 𝜏)))
7	1, 6	mpd 16	1 ⊢ (𝜑 → (𝜃 ∨ 𝜏))

Syntax hints:   → wi 4   ∧ wa 400   ∨ wo 860

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 210  df-an 401  df-or 861

This theorem is referenced by:  lnincplng  29044  plngmiropp  29054  prlngsym  29169  ricdomn1  33587  drngmxidlr  33738  drnglring  33760  dflring2  33761  dflringlem2  33763  dflring3  33765  rsprprmprmidl  33790  rsprprmprmidlb  33791  rprmirredb  33800  rprmdvdsprod  33802  mplidomlem  33895  rtelextdg2  34095