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Theorem renicax 1730
Description: A rederivation of nic-ax 1706 from lukshef-ax1 1727, proving that lukshef-ax1 1727 with nic-mp 1704 can be used as a complete axiomatization of propositional calculus. (Contributed by Anthony Hart, 31-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
renicax ((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ ((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))))

Proof of Theorem renicax
StepHypRef Expression
1 lukshefth1 1728 . . . 4 ((((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓)))
2 lukshefth2 1729 . . . 4 (((((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓))) ⊼ (((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏)))) ⊼ ((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))))))
31, 2nic-mp 1704 . . 3 ((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))))
4 lukshefth2 1729 . . . 4 (((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ ((((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏)))))
5 lukshef-ax1 1727 . . . 4 ((((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ ((((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏))))) ⊼ (((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ ((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓)))) ⊼ (((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏)))) ⊼ ((((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓))) ⊼ (((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓)))))))
64, 5nic-mp 1704 . . 3 (((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ (((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))) ⊼ (𝜏 ⊼ (𝜏 ⊼ 𝜏)))) ⊼ ((((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓))) ⊼ (((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓)))))
73, 6nic-mp 1704 . 2 (((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓)))
8 lukshefth2 1729 . 2 ((((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))) ⊼ (𝜑 ⊼ (𝜒 ⊼ 𝜓))) ⊼ (((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ ((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃))))) ⊼ ((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ ((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))))))
97, 8nic-mp 1704 1 ((𝜑 ⊼ (𝜒 ⊼ 𝜓)) ⊼ ((𝜏 ⊼ (𝜏 ⊼ 𝜏)) ⊼ ((𝜃 ⊼ 𝜒) ⊼ ((𝜑 ⊼ 𝜃) ⊼ (𝜑 ⊼ 𝜃)))))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ⊼ wnan 1521
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  df-nan 1522
This theorem is used by: (None)
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