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Proof step 27 from proof leninv-inf (previous step)

# nσ = ∞, stutf(nσ), ∃ m. nσ[m] = n0, ∀ n. ∃ m. nσ[m] = n, ∀ m. ∃ m0. m < m0 ∧ nσ[m] < nσ[m0], n ≠ 0 → nσ[m] = n - 1 ∧ ¬(m < m0 → nσ[m0] = n - 1) ⊦ ∃ m1. nσ[m1] = n0 ∧ ¬(∀ m2. m1 < m2 → nσ[m2] = nσ[m1])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 28:
# nσ = ∞, stutf(nσ), ∀ n. ∃ m. nσ[m] = n, ∀ m. ∃ m0. m < m0 ∧ nσ[m] < nσ[m0], n ≠ 0 → nσ[m] = n - 1 ∧ ¬(m < m0 → nσ[m0] = n - 1) ⊦ ∃ m. nσ[m] = nσ[m1] ∧ ¬(∀ m2. m < m2 → nσ[m2] = nσ[m])

Proof step 27 from proof leninv-inf (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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