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Proof step 13 from proof lsleninv-1 (previous step)

stutf(nσ), (# nσ = ∞ ⊃ ∃ m. nσ[m] = m1 ∧ (∀ m0. m < m0 → nσ[m0] = m1 + 1);nσ[(# nσ).n - 1] = m1), m1 < nσ[m], m1 < n, n < nσ[m], ⌜m⌝ < # nσ, stutf(nσ), m1 + 1 < nσ[m] ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
m1 < nσ[m], m1 < n, n < nσ[m], ⌜m⌝ < # nσ, stutf(nσ), m1 + 1 < nσ[m], (# nσ = ∞ ⊃ nσ[m2] = m1 ∧ (∀ m0. m2 < m0 → nσ[m0] = nσ[m2] + 1);nσ[(# nσ).n - 1] = m1) ⊦

Proof step 13 from proof lsleninv-1 (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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