(thing) by Noether Sat Sep 02 2000 at 10:42:20
Let a and b be real numbers. We write

[a,b] = {x in R : a <= x <= b}.

This is a closed interval of the real line. It contains as a subset the open interval (a,b).

del.icio.us Facebook Digg StumbleUpon Reddit   (I like it!)
Y'know, if you log in, you can write something here, or contact authors directly on the site. Create a New User if you don't already have an account.