Số tự nhiên và số nguyên

$\{0, 1, 2, 3, 4, 5, 6, 7, 8,9,10, 11..\}$left brace, 0, comma, 1, comma, 2, comma, 3, comma, 4, comma, 5, comma, 6, comma, 7, comma, 8, comma, 9, comma, 10, comma, 11, point, point, right brace

$\{... -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5..\}$left brace, point, point, point, minus, 5, comma, minus, 4, comma, minus, 3, comma, minus, 2, comma, minus, 1, comma, 0, comma, 1, comma, 2, comma, 3, comma, 4, comma, 5, point, point, right brace