This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.

Metamath Proof Explorer

Theorem exp31

Description: An exportation inference. (Contributed by NM, 26-Apr-1994)

		Ref	Expression
	Hypothesis	exp31.1	$⊢ ((φ \land ψ) \land χ) \to θ$
	Assertion	exp31	$⊢ φ \to (ψ \to (χ \to θ))$

Step	Hyp	Ref	Expression
1		exp31.1	$⊢ ((φ \land ψ) \land χ) \to θ$
2	1	ex	$⊢ (φ \land ψ) \to (χ \to θ)$
3	2	ex	$⊢ φ \to (ψ \to (χ \to θ))$