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Proof step 12 from proof idexcept-extract-right (previous step)

# ar1 = # ar0, m < # ar0, ∀ n0. n0 < # ar0 → ar1[n0] = ar0[n, ar1[n]][n0] ⊦ ar0[m] = ar1[m], m = n

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 3 terms: m

Additional information

Used simplifier rules: ⊦ m ≠ n → ar[n, a][m] = ar[m]; (s) Used terms: m