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Proof step 31 from proof orderedle-all (previous step)

∀ m, n. m ≤ n ∧ ¬ 1 + # y < n → ¬ (a ' + a0 ' + y)[n] < (a ' + a0 ' + y)[m] ⊦ ordered≤(a0 ' + y), ∀ m, n. m ≤ n ∧ n < 1 + # y → ¬ (a0 ' + y)[n] < (a0 ' + y)[m], ¬ a0 < a ∧ ordered≤(a0 ' + y)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 32:
(a0 ' + y)[n] < (a0 ' + y)[m], m ≤ n, n ≤ # y, m ≤ # y, ∀ m, n. m ≤ n ∧ ¬ 1 + # y < n → ¬ (a ' + a0 ' + y)[n] < (a ' + a0 ' + y)[m] ⊦ ordered≤(a0 ' + y)

Rule argument

Additional information

Used simplifier rules: let: ⊦ n ≤ n0 ∧ n0 ≤ n1 → n ≤ n1; (forward) from specification nat%lels: ⊦ ¬ m < n ↔ n ≤ m; from specification nat%c: ⊦ m + n = n + m; from specification nat-basic2%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic2%s: ⊦ m < n + 1 ↔ ¬ n < m; from specification nat-basic2