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Step * 1 1 of Lemma divisibility-by-5-rule

.....assertion..... 
1. n : ℕ+
2. a : ℕn ⟶ ℤ
⊢ 10 ≡ 0 mod 5
BY
{ xxx(With ⌜2⌝ (D 0)⋅ THEN Auto)xxx }

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Latex:

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Latex:
.....assertion..... 
1.  n  :  \mBbbN{}\msupplus{}
2.  a  :  \mBbbN{}n  {}\mrightarrow{}  \mBbbZ{}
\mvdash{}  10  \mequiv{}  0  mod  5


By

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Latex:
xxx(With  \mkleeneopen{}2\mkleeneclose{}  (D  0)\mcdot{}  THEN  Auto)xxx

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