Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

The ranges of the floor and ceiling functions are both equal to this set. The continuum hypothesis states that there is no set with a cardinality between those of the real numbers and this set. A complex number is Gaussian if its a and b components are both this type of number. The (*) rational numbers can be written as a fraction of two numbers from this set. For 10 points, name this set of numbers that includes the natural numbers, their negative counterparts, and zero.
Science