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Proof step 8 from proof denum-same (previous step)

⊦ rj.num = 0, abs(rj.denom) / gcd(abs(rj.num), abs(rj.denom)) = rj.denom

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 9:
⊦ gcd(i, j) = gcd(abs(i), abs(j))
Proof step 10:
⊦ rj.num = 0, abs(rj.denom) / gcd(rj.num, rj.denom) = rj.denom

Rule argument

seq: ⊦ gcd(i, j) = gcd(abs(i), abs(j)) subst: [j, i] → [rj.denom, rj.num] rotate: T spec: int-gcd inst: name: gcd-pos-01

Additional information

Used terms: rj.denom, rj.num