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Step * of Lemma l_subset_nil_left

∀[T:Type]. ∀[L:T List].  l_subset(T;[];L)
BY
{ (Auto THEN RepUR ``l_subset`` 0 THEN Auto THEN GenListD (-1)⋅ THEN Auto) }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[L:T  List].    l\_subset(T;[];L)


By

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Latex:
(Auto  THEN  RepUR  ``l\_subset``  0  THEN  Auto  THEN  GenListD  (-1)\mcdot{}  THEN  Auto)

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