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Proof step 10 from proof square-eq (previous step)

i * i = j * j ⊦ abs(i) = abs(j), abs(i) < abs(j)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
i * i = j * j, abs(j) < abs(i) ⊦

Rule argument

Additional information

Used simplifier rules: ⊦ i < j → ¬ j < i; (s)% ⊦ ¬ i < j → (i = j ↔ ¬ j < i); (ss)