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Proof step 6 from proof ls-zero (previous step)

⊦ mkDecimal(~ i, abs(j)).int < 0 ↔ 0 < i

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 7:
⊦ mkDecimal(~ i, j).int = ~ mkDecimal(i, j).int
Proof step 8:
⊦ ~ mkDecimal(i, abs(j)).int < 0 ↔ 0 < i

Rule argument

spec: decimal inst: name: getint-neg-01 seq: ⊦ mkDecimal(~ i, j).int = ~ mkDecimal(i, j).int subst: [j, i] → [abs(j), i] flags: rewrite

Additional information

Used terms: abs(j), i