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Proof step 15 from proof inv-inverts-last (previous step)

# nσ = ⌜n⌝ + ⌜1⌝ , leninv(nσ) = ∞, stutf(nσ), ∀ n0. n < n0 ∨ nσ[n0] ≠ nσ[n] ⊦ ∞.n = n

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 4 terms: n

Additional information

Used simplifier rules: ⊦ ¬ n < n; (s) Used terms: n