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Proof step 43 from proof inv-get-inverse (previous step)

⌜n⌝ < leninv(nσ), stutf(nσ) ⊦ nσ[⌜(λ m. max∞(λ n. ⌜n⌝ < # nσ ∧ nσ[n] = m).n) to leninv(nσ).n⌝ [n]] = n, leninv(nσ) = ∞

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 44:
⌜n⌝ < leninv(nσ), stutf(nσ) ⊦ nσ[((λ m. max∞(λ n. ⌜n⌝ < # nσ ∧ nσ[n] = m).n) to leninv(nσ).n)[n]] = n, leninv(nσ) = ∞

Rule argument

Additional information

Used simplifier rules: ⊦ ⌜nl⌝ [n] = nl[n]; (s)