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Proof step 61 from proof lagrange-lemma (previous step)

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

User applied rule insert equation

And obtained the following new goals

Rule argument

pos: left 3 flags: discard

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