 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
| • HOME • ABOUT • CATEGORIES • COPYRIGHT • NEWSLETTER   
|
open
An open interval is a piece of a straight line that doesn't contain its endpoints; a half-open interval contains one endpoint. On the number line, open intervals (a, b) are defined as {x: a < x < b}. An open set is one in which every point in the set has a neighborhood lying in the set.
Related category
• MATHEMATICAL TERMINOLOGYAlso on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History