Theorem syld3an3 1180

Description: A syllogism inference. (Contributed by NM, 20-May-2007.)

Hypotheses

Ref	Expression
syld3an3.1	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
syld3an3.2	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜃) → 𝜏)

Assertion

Ref	Expression
syld3an3	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜏)

Proof of Theorem syld3an3

Step	Hyp	Ref	Expression
1		simp1 904	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜑)
2		simp2 905	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜓)
3		syld3an3.1	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
4		syld3an3.2	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜃) → 𝜏)
5	1, 2, 3, 4	syl3anc 1135	1 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜏)

Syntax hints:   → wi 4   ∧ w3a 885

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101

This theorem depends on definitions:  df-bi 110  df-3an 887

This theorem is referenced by:  syld3an1  1181  syld3an2  1182  brelrng  4565  moriotass  5496  nnncan1  7247  lediv1  7835  modqval  9166  modqvalr  9167  modqcl  9168  flqpmodeq  9169  modq0  9171  modqge0  9174  modqlt  9175  modqdiffl  9177  modqdifz  9178  expival  9257