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Proof step 1 from proof less-leninv (conclusion)

⊦ stutf(nσ) ∧ # nσ = ∞ ∧ nσ[n + 1] = nσ[n] + 1 → (¬ ⌜nσ[n]⌝ < leninv(nσ) ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information