# Definition:Graph Theory

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## Definition

**Graph theory** is the branch of mathematics concerned with the structure and properties of graphs.

As a (graph-theoretical) graph has the same conceptual definition as a relation, it follows that there is considerable overlap between the fields of graph theory and relation theory.

## Also see

- Results about
**graph theory**can be found here.

## Sources

- 1992: George F. Simmons:
*Calculus Gems*... (previous) ... (next): Chapter $\text {A}.21$: Euler ($1707$ – $1783$)