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Step * 1 of Lemma minimal-not-not-xmiddle-from-program


λF.(F (inr (λp.(F (inl p))) )) ∈ ∀[P,A:ℙ].  (((P ∨ (P ⇒ A)) ⇒ A) ⇒ A)
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Latex:

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Latex:

\mlambda{}F.(F  (inr  (\mlambda{}p.(F  (inl  p)))  ))  \mmember{}  \mforall{}[P,A:\mBbbP{}].    (((P  \mvee{}  (P  {}\mRightarrow{}  A))  {}\mRightarrow{}  A)  {}\mRightarrow{}  A)


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Latex:
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