# Definition:Tree (Graph Theory)/Node

< Definition:Tree (Graph Theory)(Redirected from Definition:Node (Graph Theory))

## Definition

The vertices of a tree are called its **nodes**.

## Also known as

Many sources continue to refer to the vertices of a tree as its **vertices**.

## Sources

- 1996: H. Jerome Keisler and Joel Robbin:
*Mathematical Logic and Computability*... (previous) ... (next): $\S 1.7$: Tableaus