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Proof step 4 from proof mult-zero (previous step)

⊦ rational(ri.num * rational(0, 1).num, ri.denom * rational(0, 1).denom) = rational(0, 1)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
⊦ rational(0, ri.denom) = rational(0, 1)

Rule argument

Additional information

Used simplifier rules: numerator-zero: ⊦ rational(0, j).num = 0;%denominator-zero: ⊦ rational(0, j).denom = 1;% ⊦ 1 * i = i;% ⊦ i * j = j * i;% ⊦ i * j * j0 = (i * j) * j0;% ⊦ i * 0 = 0;