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Proof step 107 from proof leninv-succ (previous step)

# nσ = ⌜m1⌝ + ⌜1⌝ , nσ[m0] = m - 1, nσ[m1] + 1 < m, stutf(nσ) ⊦ m1 < m0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 108:
# nσ = ⌜m1⌝ + ⌜1⌝ , nσ[m0] = m - 1, nσ[m1] + 1 < m, stutf(nσ), m0 ≤ m1 ⊦

Rule argument

Additional information

Used simplifier rules: ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic% ⊦ m < n ↔ ¬ n ≤ m; (ss)