Theorem simp1r3

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

	Ref	Expression
Assertion	simp1r3	⊢ ( ( ( 𝜃 ∧ ( 𝜑 ∧ 𝜓 ∧ 𝜒 ) ) ∧ 𝜏 ∧ 𝜂 ) → 𝜒 )

Proof

Step	Hyp	Ref	Expression
1		simpr3	⊢ ( ( 𝜃 ∧ ( 𝜑 ∧ 𝜓 ∧ 𝜒 ) ) → 𝜒 )
2	1	3ad2ant1	⊢ ( ( ( 𝜃 ∧ ( 𝜑 ∧ 𝜓 ∧ 𝜒 ) ) ∧ 𝜏 ∧ 𝜂 ) → 𝜒 )