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Step * 2 of Lemma free-dl_wf


1. X : Type
2. EquivRel(X List List;as,bs.dlattice-eq(X;as;bs))
⊢ [[]] ∈ free-dl-type(X)
BY
{ (SubsumeC ⌜X List List⌝⋅ THEN Auto) }

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Latex:

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Latex:

1.  X  :  Type
2.  EquivRel(X  List  List;as,bs.dlattice-eq(X;as;bs))
\mvdash{}  [[]]  \mmember{}  free-dl-type(X)


By

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Latex:
(SubsumeC  \mkleeneopen{}X  List  List\mkleeneclose{}\mcdot{}  THEN  Auto)

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