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Proof step 6 from proof mult-one (previous step)

0 < j ⊦ rational(i, j) * rational(1, 1) = rational(i, j)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

name: mult-def-03 rotate: F subst: [j2, i2, j1, i1] → [1, 1, j, i]

Additional information

Used simplifier rules: ⊦ 1 * i = i;% ⊦ i * j * j0 = (i * j) * j0;% ⊦ i * j = j * i; Used terms: 1, 1, j, i