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Proof step 25 from proof two-even (previous step)

2 * i = 2 * j2 ^2 + 4 * j0 * j0 + 4 * j0 * j2, 2 * j2 + j0 * 2 = j * 2 ⊦ 2 * j2 ^2 + 4 * j0 * j0 + 4 * j0 * j2 = 2 * (j2 ^2 + 2 * j0 * j0 + 2 * j0 * j2), i = j0 ^2 + j ^2

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 26:
2 * i = 2 * j2 ^2 + 4 * j0 * j0 + 4 * j0 * j2, 2 * j2 + j0 * 2 = j * 2 ⊦ (2 * j0 * j0 + 2 * j0 * j2) * 2 = 4 * j0 * j0 + 4 * j0 * j2, i = j0 ^2 + j ^2

Rule argument

Additional information

Used simplifier rules: commutativity: ⊦ i * j = j * i; from specification int-mult%associativity: ⊦ i * j * j0 = (i * j) * j0; from specification int-mult%add-c: ⊦ i + j = j + i; from specification int-basic2%add-a: ⊦ i + j + i0 = (i + j) + i0; from specification int-basic2% ⊦ (i + j) * i0 = j0 + j * i0 ↔ i * i0 = j0; (s)