Half-line (ray)
From Encyclopedia of Mathematics
One of the parts of a line into which that line is divided by any point 
on it. If the point 
is attached to the half-line, then that half-line is called a closed half-line (or closed ray).
How to Cite This Entry:
Half-line (ray). Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Half-line_(ray)&oldid=31426
Half-line (ray). Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Half-line_(ray)&oldid=31426
This article was adapted from an original article by BSE-3 (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article