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Step * of Lemma nat_wf

ℕ ∈ Type
BY
{ (Unfold `nat` 0 THEN Auto THEN Unfold `le` 0 THEN Auto) }

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Latex:

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Latex:
\mBbbN{}  \mmember{}  Type


By

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Latex:
(Unfold  `nat`  0  THEN  Auto  THEN  Unfold  `le`  0  THEN  Auto)

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