Task: Text Categorization
Input (English): 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.
Output (English): Science