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Step * of Lemma isqrtn_wf

∀x:ℕ. (isqrtn(x) ∈ {r:ℕ| ((r * r) ≤ x) ∧ x < (r + 1) * (r + 1)} )
BY
{ TACTIC:ProveWfLemma }

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Latex:

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Latex:
\mforall{}x:\mBbbN{}.  (isqrtn(x)  \mmember{}  \{r:\mBbbN{}|  ((r  *  r)  \mleq{}  x)  \mwedge{}  x  <  (r  +  1)  *  (r  +  1)\}  )


By

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Latex:
TACTIC:ProveWfLemma

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