Theorem ax1 949

Description: Standard propositional axiom derived from Lukasiewicz axioms.

Assertion

Ref	Expression
ax1	|- (ph -> (ps -> ph))

Proof of Theorem ax1

Step	Hyp	Ref	Expression
1		luklem5 945	1 |- (ph -> (ps -> ph))

Syntax hints:   -> wi 3

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7

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