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Proof step 10 from proof keys-at (previous step)

m < # ax0, ∀ n, fs0. n < # ax0 → keys(fs0, ax0)[n] = fs0[ax0[n]].key ⊦ keys(fs, ax0)[m] = fs[ax0[m]].key, ax0 = []

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 2 terms: m, fs

Additional information

Used terms: m, fs