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Step * 1 1 1 2 1 of Lemma str-to-nat-to-str


1. v : ℤ
⊢ ((0 ≤ v) ∧ v < 10) ⇒ (||nat-to-str(v)|| = 1 ∈ ℤ)
BY
{ (Auto THEN RecUnfold `nat-to-str` 0 THEN Repeat (AutoSplit)) }

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Latex:

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Latex:

1.  v  :  \mBbbZ{}
\mvdash{}  ((0  \mleq{}  v)  \mwedge{}  v  <  10)  {}\mRightarrow{}  (||nat-to-str(v)||  =  1)


By

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Latex:
(Auto  THEN  RecUnfold  `nat-to-str`  0  THEN  Repeat  (AutoSplit))

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