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Step * 1 of Lemma select-nthtl


1. n : ℤ
⊢ ⊥ ~ hd([])
BY
{ (RWO "hd-nil" 0 THEN Auto) }

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Latex:

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Latex:

1.  n  :  \mBbbZ{}
\mvdash{}  \mbot{}  \msim{}  hd([])


By

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Latex:
(RWO  "hd-nil"  0  THEN  Auto)

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