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Step * 1 of Lemma non-pair-list


1. T : Type
2. ff = ff
⊢ [] ∈ Unit
BY
{ (Unfold `nil` 0 THEN Auto) }

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Latex:

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Latex:

1.  T  :  Type
2.  ff  =  ff
\mvdash{}  []  \mmember{}  Unit


By

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Latex:
(Unfold  `nil`  0  THEN  Auto)

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