Theorem syl3anr2 1222

Description: A syllogism inference. (Contributed by NM, 1-Aug-2007.)

Hypotheses

Ref	Expression
syl3anr2.1	⊢ (𝜑 → 𝜃)
syl3anr2.2	⊢ ((𝜒 ∧ (𝜓 ∧ 𝜃 ∧ 𝜏)) → 𝜂)

Assertion

Ref	Expression
syl3anr2	⊢ ((𝜒 ∧ (𝜓 ∧ 𝜑 ∧ 𝜏)) → 𝜂)

Proof of Theorem syl3anr2

Step	Hyp	Ref	Expression
1		syl3anr2.1	. . 3 ⊢ (𝜑 → 𝜃)
2		syl3anr2.2	. . . 4 ⊢ ((𝜒 ∧ (𝜓 ∧ 𝜃 ∧ 𝜏)) → 𝜂)
3	2	ancoms 264	. . 3 ⊢ (((𝜓 ∧ 𝜃 ∧ 𝜏) ∧ 𝜒) → 𝜂)
4	1, 3	syl3anl2 1218	. 2 ⊢ (((𝜓 ∧ 𝜑 ∧ 𝜏) ∧ 𝜒) → 𝜂)
5	4	ancoms 264	1 ⊢ ((𝜒 ∧ (𝜓 ∧ 𝜑 ∧ 𝜏)) → 𝜂)

Syntax hints:   → wi 4   ∧ wa 102   ∧ w3a 919

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106

This theorem depends on definitions:  df-bi 115  df-3an 921

This theorem is referenced by: (None)