real line

(redirected from Real number line)

real line

[′rēl ′līn]
(mathematics)
A straight line of infinite extent upon which the real numbers are plotted according to their distance in a positive or negative direction from a point arbitrarily chosen as zero. Also known as number line.
References in periodicals archive ?
For numbers on the real number line, there is a definite sense of order.
After all, the real number line is an infinitely long, continuous expanse, while the counting numbers are just isolated milestones along this line.
Analysis studies functions, the real number line, and the ideas of continuity and limit.