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Step * of Lemma strong_before_wf

∀[T:Type]. ∀[L:T List]. ∀[x,y:T].  (x << y ∈ L ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[L:T  List].  \mforall{}[x,y:T].    (x  <<  y  \mmember{}  L  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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