Metamath Proof Explorer


Theorem 3imp2

Description: Importation to right triple conjunction. (Contributed by NM, 26-Oct-2006)

Ref Expression
Hypothesis 3imp1.1 ( 𝜑 → ( 𝜓 → ( 𝜒 → ( 𝜃𝜏 ) ) ) )
Assertion 3imp2 ( ( 𝜑 ∧ ( 𝜓𝜒𝜃 ) ) → 𝜏 )

Proof

Step Hyp Ref Expression
1 3imp1.1 ( 𝜑 → ( 𝜓 → ( 𝜒 → ( 𝜃𝜏 ) ) ) )
2 1 3impd ( 𝜑 → ( ( 𝜓𝜒𝜃 ) → 𝜏 ) )
3 2 imp ( ( 𝜑 ∧ ( 𝜓𝜒𝜃 ) ) → 𝜏 )