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Proof step 4 from proof denom-neg-01 (previous step)

⊦ i = 0, rational(~ i, 0).denom = 1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ rational(i, 0) = rational(i, 1)

Rule argument

name: zero-denom rotate: F subst: [i] → [~ i]

Additional information

Used simplifier rules: denom-one: ⊦ rational(i, 1).denom = 1; Used terms: ~ i