ikkeheltalige
Ikkeheltalige is a mathematical term used to describe real numbers that are not integers. Formally, a real number x is ikkeheltalig if x is not in the set of integers Z. Equivalently, x has a nonzero fractional part, meaning {x} ≠ 0, where {x} = x − floor(x) denotes the fractional part.
Non-integers can be divided into rational and irrational categories. Rational non-integers include numbers such as 3/2
The collection of ikkeheltalige numbers is the real numbers with the integers removed, denoted R \ Z.
Arithmetic with ikkeheltalige numbers follows standard real arithmetic, but some ordinary closures fail. For example, adding
In Danish or Norwegian mathematical usage, ikkeheltalige tal describe non-integer numbers. The term accommodates both rational