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Step * of Lemma ancestral-logic-example2

∀x,y:Dom.  (TC(λa,b.TC(λi,j.P i j)(a,b))(x,y) ⇒ TC(λa,b.P a b)(x,y))
BY
{ StartFO }

1
⊢ ∀x,y:Dom.  (TC(λa,b.TC(λi,j.P i j)(a,b))(x,y) ⇒ TC(λa,b.P a b)(x,y))

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Latex:

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Latex:
\mforall{}x,y:Dom.    (TC(\mlambda{}a,b.TC(\mlambda{}i,j.P  i  j)(a,b))(x,y)  {}\mRightarrow{}  TC(\mlambda{}a,b.P  a  b)(x,y))


By

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Latex:
StartFO

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