Definition:Real Interval/Length

Definition

Let:

$\closedint a b$

or

$\hointr a b$

or

$\hointl a b$

or

$\openint a b$

be a real interval.

The difference $b - a$ between the endpoints is called the length of the interval.

Sources

• 1970: Arne Broman: Introduction to Partial Differential Equations ... (previous) ... (next): Chapter $1$: Fourier Series: $1.1$ Basic Concepts: $1.1.1$ Definitions