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Proof step 3 from proof lsleninv-1 (previous step)

⌜m⌝ < # nσ, n < nσ[m], stutf(nσ) ⊦ ⌜n⌝ < leninv(nσ)

User applied rule structural induction

And obtained the following new goals

Proof step 4:
⌜m0⌝ = leninv(nσ), n < nσ[m], ⌜m⌝ < # nσ, stutf(nσ) ⊦ ⌜n⌝ < leninv(nσ)

Rule argument

term: leninv(nσ)

Additional information

Used simplifier rules: natinf freely generated by ∞, ⌜ ⌝;;% ⊦ ⌜m⌝ < ∞; (s)