Definition:Real Interval/Endpoints

Definition
Let:
 * $\left[{a \,.\,.\, b}\right]$

or
 * $\left[{a \,.\,.\, b}\right)$

or
 * $\left({a \,.\,.\, b}\right]$

or
 * $\left({a \,.\,.\, b}\right)$

be a real interval.

The numbers $a, b \in \R$ are known as the endpoints (or end points) of the interval.

$a$ is sometimes called the left hand endpoint and $b$ the right hand end point of the interval.

Also known as
The endpoints can also be written as end points.