Theorem adantrll 720

Description: Deduction adding a conjunct to antecedent. (Contributed by NM, 26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)

Hypothesis

Ref	Expression
adantr2.1	⊢ ((𝜑 ∧ (𝜓 ∧ 𝜒)) → 𝜃)

Assertion

Ref	Expression
adantrll	⊢ ((𝜑 ∧ ((𝜏 ∧ 𝜓) ∧ 𝜒)) → 𝜃)

Proof of Theorem adantrll

Step	Hyp	Ref	Expression
1		simpr 487	. 2 ⊢ ((𝜏 ∧ 𝜓) → 𝜓)
2		adantr2.1	. 2 ⊢ ((𝜑 ∧ (𝜓 ∧ 𝜒)) → 𝜃)
3	1, 2	sylanr1 680	1 ⊢ ((𝜑 ∧ ((𝜏 ∧ 𝜓) ∧ 𝜒)) → 𝜃)

Syntax hints:   → wi 4   ∧ wa 398

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 209  df-an 399

This theorem is referenced by:  lo1le  15007  nrmmetd  23183  mdslmd3i  30108