Theorem com35 84

Description: Commutation of antecedents. Swap 3rd and 5th. (Contributed by Jeff Hankins, 28-Jun-2009.)

Hypothesis

Ref	Expression
com5.1	⊢ (φ → (ψ → (χ → (θ → (τ → η)))))

Assertion

Ref	Expression
com35	⊢ (φ → (ψ → (τ → (θ → (χ → η)))))

Proof of Theorem com35

Step	Hyp	Ref	Expression
1		com5.1	. . . 4 ⊢ (φ → (ψ → (χ → (θ → (τ → η)))))
2	1	com34 77	. . 3 ⊢ (φ → (ψ → (θ → (χ → (τ → η)))))
3	2	com45 83	. 2 ⊢ (φ → (ψ → (θ → (τ → (χ → η)))))
4	3	com34 77	1 ⊢ (φ → (ψ → (τ → (θ → (χ → η)))))

Syntax hints:   → wi 4

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7

This theorem is referenced by: (None)