# Definition:Range of Sequence

## Definition

Let $\left \langle{x_n}\right \rangle_{n \mathop \in A}$ be a sequence.

The **range of $\left \langle{x_n}\right \rangle$** is the set:

- $\left\{{x_n: n \in A}\right\}$

## Also known as

Some treatments of this subject refer to the **range** of a sequence as the **associated set** of the sequence.

In keeping with the naming convention on this site it would make sense to refer to this object as the **image of (the sequence) $\left \langle{x_n}\right \rangle$**.

However, this is rarely seen in the published literature.

## Sources

- 1970: Lynn Arthur Steen and J. Arthur Seebach, Jr.:
*Counterexamples in Topology*... (previous) ... (next): $\text{I}: \ \S 1$: Limit Points - 1977: K.G. Binmore:
*Mathematical Analysis: A Straightforward Approach*... (previous) ... (next): $\S 4.2$: Sequences