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Proof step 71 from proof lagrange-lemma (previous step)

j * i ≤ 0, j * i = (j1 ^2 + j0 ^2) + 1, i < j, i ≤ 0, 0 < j, 0 ≤ j0, j1 ≤ (j - 1) / 2, j0 ≤ (j - 1) / 2, prime(j), 0 ≤ j, 0 ≤ j1 ⊦ j = 2

User applied rule insert equation

And obtained the following new goals

Proof step 72:
(j1 ^2 + j0 ^2) + 1 ≤ 0, i < j, i ≤ 0, 0 < j, 0 ≤ j0, j1 ≤ (j - 1) / 2, j0 ≤ (j - 1) / 2, prime(j), 0 ≤ j, 0 ≤ j1 ⊦ j = 2

Rule argument

pos: left 2 flags: discard

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