Theorem simp2rl 1068

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)

Assertion

Ref	Expression
simp2rl	⊢ ((𝜃 ∧ (𝜒 ∧ (𝜑 ∧ 𝜓)) ∧ 𝜏) → 𝜑)

Proof of Theorem simp2rl

Step	Hyp	Ref	Expression
1		simprl 529	. 2 ⊢ ((𝜒 ∧ (𝜑 ∧ 𝜓)) → 𝜑)
2	1	3ad2ant2 1021	1 ⊢ ((𝜃 ∧ (𝜒 ∧ (𝜑 ∧ 𝜓)) ∧ 𝜏) → 𝜑)

Syntax hints:   → wi 4   ∧ wa 104   ∧ w3a 980

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108

This theorem depends on definitions:  df-bi 117  df-3an 982

This theorem is referenced by:  tfrlem5  6372  4sqlem18  12577