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Proof step 8 from proof negate-eq (previous step)

rational(0, 1) = ~ rj + ri ⊦ ri = rj

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 9:
⊦ ~ ri = 0r - ri
Proof step 10:
rational(0, 1) = (0r - rj) + ri ⊦ ri = rj

Rule argument

name: neg-def rotate: F subst: [ri] → [rj]

Additional information

Used terms: rj