User:Gwalla/integral

In mathematics integral has several meanings:
 * In calculus, the integral of a function is the area below its graph. See integral.
 * A real number is "integral" if it is an integer.
 * The integral value of a real number x is defined as the largest integer which is less than, or equal to, x. The integral value of x is often denoted by $$\lfloor x \rfloor$$ and called the floor function.
 * In abstract algebra, an integral domain is a commutative ring with 0 &#8800; 1 in which the product of any two non-zero elements is always non-zero. Integral domains are generalizations of the integers.
 * In number theory, an element of a number field is called integral if it is an algebraic integer.