Theorem exp53 453

Description: An exportation inference. (Contributed by Jeff Hankins, 30-Aug-2009.)

Hypothesis

Ref	Expression
exp53.1	⊢ ((((𝜑 ∧ 𝜓) ∧ (𝜒 ∧ 𝜃)) ∧ 𝜏) → 𝜂)

Assertion

Ref	Expression
exp53	⊢ (𝜑 → (𝜓 → (𝜒 → (𝜃 → (𝜏 → 𝜂)))))

Proof of Theorem exp53

Step	Hyp	Ref	Expression
1		exp53.1	. . 3 ⊢ ((((𝜑 ∧ 𝜓) ∧ (𝜒 ∧ 𝜃)) ∧ 𝜏) → 𝜂)
2	1	ex 418	. 2 ⊢ (((𝜑 ∧ 𝜓) ∧ (𝜒 ∧ 𝜃)) → (𝜏 → 𝜂))
3	2	exp43 442	1 ⊢ (𝜑 → (𝜓 → (𝜒 → (𝜃 → (𝜏 → 𝜂)))))

This proof depends on syntax axioms:   → wi 4   ∧ wa 401

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This proof depends on definitions:  df-bi 210  df-an 402

This theorem is used by:  omordi  8567  xpdom2  9084  elfzodifsumelfzo  13859  grplcan  19204  2clwwlk2clwwlk  30944  grpolcan  31125