Metamath Proof Explorer


Theorem exp510

Description: An exportation inference. (Contributed by Jeff Hankins, 7-Jul-2009)

Ref Expression
Hypothesis exp510.1 ( ( 𝜑 ∧ ( ( ( 𝜓𝜒 ) ∧ 𝜃 ) ∧ 𝜏 ) ) → 𝜂 )
Assertion exp510 ( 𝜑 → ( 𝜓 → ( 𝜒 → ( 𝜃 → ( 𝜏𝜂 ) ) ) ) )

Proof

Step Hyp Ref Expression
1 exp510.1 ( ( 𝜑 ∧ ( ( ( 𝜓𝜒 ) ∧ 𝜃 ) ∧ 𝜏 ) ) → 𝜂 )
2 1 ex ( 𝜑 → ( ( ( ( 𝜓𝜒 ) ∧ 𝜃 ) ∧ 𝜏 ) → 𝜂 ) )
3 2 exp5j ( 𝜑 → ( 𝜓 → ( 𝜒 → ( 𝜃 → ( 𝜏𝜂 ) ) ) ) )