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Proof step 4 from proof idexcept-comm (previous step)

# ar0 = # ar1, m < # ar1, ∀ m. m < # ar1 ∧ m ≠ n → ar0[m] = ar1[m] ⊦ # ar1 = 0, m = n, ar1[m] = ar0[m]

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 3 terms: m

Additional information

Used terms: m