Noun
English Wikipedia has an article on:number lineWikipedia
number line (plural number lines)
(mathematics) A line that graphically represents the real numbers as a series of points whose distance from an origin is proportional to their value
As a linear continuum The order on the number line Each set on the real number line has a supremum. Source: Internet
Complex numbers extend the concept of the one-dimensional number line to the two-dimensional complex plane by using the horizontal axis for the real part and the vertical axis for the imaginary part. Source: Internet
In other words, the number line where every real number is defined as a Dedekind cut of rationals is a complete continuum without any further gaps. Source: Internet
As in the two-dimensional case, each axis becomes a number line. Source: Internet
Since the map is confined to an interval on the real number line, its dimension is less than or equal to unity. Source: Internet