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Proof step 1 from proof eq-leninv (conclusion)

⊦ ⌜n⌝ < # nσ ∧ stutf(nσ) → (⌜nσ[n]⌝ = leninv(nσ) ↔ # nσ = ∞ ∧ (∀ m. n < m ∧ ⌜m⌝ < # nσ → nσ[m] = nσ[n]))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information