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Nodes and edges are fundamental concepts in graph theory, a branch of mathematics that studies the relationships between objects. A graph is a collection of nodes (also called vertices) and edges (also called links or arcs). Nodes represent entities, and edges represent the relationships or connections between these entities.
In a graph, nodes are typically denoted by circles or points, while edges are denoted by lines
Graphs can be used to model a wide range of real-world systems and phenomena. For example, in
Graphs can also be classified based on their properties. For example, a graph is said to be