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Proof step 33 from proof div-two-intro (previous step)

j0 * 2 < 0, j0 < 0, 0 ≤ i0 ⊦ ~((i0 * 2 + 1) / ~(j0 * 2)) = i0 / j0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 34:
⊦ ~ i * j = ~(i * j)
Proof step 35:
j0 * 2 < 0, j0 < 0, 0 ≤ i0 ⊦ ~((i0 * 2 + 1) / (~ j0 * 2)) = i0 / j0

Rule argument

spec: int-mult inst: name: minus-left seq: ⊦ ~ i * j = ~(i * j) subst: [j, i] → [2, j0] flags: rewrite

Additional information

Used terms: 2, j0