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Proof step 1 from proof mkDecimal-enlarge (conclusion)

⊦ 0 ≤ j0 → mkDecimal(i, j) = mkDecimal(i * 10 ^ j0, abs(j) + j0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
0 ≤ j0 ⊦ mkDecimal(i, j) = mkDecimal(i * 10 ^ j0, abs(j) + j0)

Rule argument

Additional information

Used simplifier rules: forward-le-01: ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward) from specification int-abs