自然数与整数

$\{0, 1, 2, 3, 4, 5, 6, 7, 8,9,10, 11..\}$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