- Proof of Lemma 11 (Page 9): "let {c_i, c_j, c_k} be a triple such that i > j > k, c_i > c_k > c_j, and k = j+1" should be "let {c_i, c_j, c_k} be a triple such that i < j < k, c_i > c_k > c_j, and k = j+1".