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Proof step 3 from proof le-add (previous step)

⊦ ¬ mkDecimal(i0, j) < dec + mkDecimal(i, j) ↔ dec ≤ mkDecimal(i0 - i, j)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
⊦ ¬ mkDecimal(i0 - i, j) < dec ↔ dec ≤ mkDecimal(i0 - i, j)

Rule argument

Additional information

Used simplifier rules: ls-add-01: ⊦ mkDecimal(i, j) < dec + mkDecimal(i0, j) ↔ mkDecimal(i - i0, j) < dec;%add-a: ⊦ dec0 + dec1 + dec2 = (dec0 + dec1) + dec2;%add-c: ⊦ dec_i + dec_j = dec_j + dec_i;