| a1 < a, a0 < a, max(a1 ' + ins≤(a, y)) < a0, max(a1 ' + ins≤(a, y)) < a, ∀ a2. max(ins≤(a2, a1 ' + y)) = a2 ∨ a2 < max(a1 ' + y) ⊦ a0 = a, a < (max(a1 ' + y) < a0 ⊃ a0;max(a1 ' + y)) |
Used simplifier rules: ⊦ b < a → ins≤(a, b ' + x) = b + ins≤(a, x); (s)% ⊦ a + x = a ' + x; (s)%a: ⊦ (x + y) + z = x + y + z; from specification list%lel: ⊦ a < b ∧ a = c → c < b; (forward) from specification oelem% ⊦ ¬ a < a; (s)%transitivity: ⊦ a < b ∧ b < c → a < c; (forward) from specification oelem%nll: ⊦ ¬ b < a ∧ b < c → a < c; (forward) from specification oelem% ⊦ a < b → (b < a ↔ false); (ss) Used terms: a