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Proof step 4 from proof denom-neg-02 (previous step)

⊦ (~ 0r).denom = 0r.denom

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ 0r = rational(0, 1)
Proof step 6:
⊦ (~ rational(0, 1)).denom = rational(0, 1).denom

Rule argument

name: zero-def rotate: F subst:

Additional information

Used terms: