A closed interval corresponding to a Finite portion of an infinite Line. Line segments are generally labeled with two letters corresponding to their endpoints, say and , and then written . The length of the line segment is indicated with an overbar, so the length of the line segment would be written .

Curiously, the number of points in a line segment (Aleph-1) is equal to that in an entire 1-D Space (a Line), and also to the number of points in an -D Space, as first recognized by Georg Cantor.

© 1996-9

1999-05-25