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Step * of Lemma free-0_wf

∀[X:Type]. (0 ∈ free-word(X))
BY
{ (ProveWfLemma THEN Unfold `free-word` 0 THEN SubsumeC ⌜(X + X) List⌝⋅ THEN Auto) }

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Latex:

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Latex:
\mforall{}[X:Type].  (0  \mmember{}  free-word(X))


By

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Latex:
(ProveWfLemma  THEN  Unfold  `free-word`  0  THEN  SubsumeC  \mkleeneopen{}(X  +  X)  List\mkleeneclose{}\mcdot{}  THEN  Auto)

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