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Proof step 6 from proof product-perm-equal (previous step)

i ∈ ints0 ∧ perm(ints1, ints0 -1l i), ∀ ints0. perm(ints1, ints0) → Π ints1 = Π ints0 ⊦ i * Π ints1 = Π ints0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information