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Proof step 1 from proof root-is-irrational (conclusion)
⊦ ri * ri = rational(j, 1) → (∃ i. j = i * i)
Heuristic simplifier applied rule simplifier
And obtained the following new goals
Proof step 2
:
ri * ri = rational(j, 1) ⊦ ∃ i. j = i * i
Rule argument
Additional information