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Proof step 7 from proof maxScale-pot10-01 (previous step)

∀ j0, i. i→n(j0) < i→n(0) → 0 ≤ j0 → maxScale(i * 10 ^ j0) = j0 ∨ i % 10 = 0 ⊦ i % 10 = 0, maxScale(i) = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 8:
⊦ i % 10 ≠ 0 ∧ i ≠ 0 → maxScale(i) = 0

Rule argument

spec: inst: name: maxScale-base seq: ⊦ i % 10 ≠ 0 ∧ i ≠ 0 → maxScale(i) = 0 subst: [i] → [i] flags: rewrite, current

Additional information

Used simplifier rules: maxScale-zero: ⊦ maxScale(0) = 0; Used terms: i