Introduction to Graphs

What are graphs?

Graphs are mathematical structures that represent pairwise relationships between objects. A graph is a flow structure that represents the relationship between various objects. It can be visualized by using the following two basic components:

• Nodes: These are the most important components in any graph. Nodes are entities whose relationships are expressed using edges. If a graph comprises 2 nodes, A and B and an undirected edge between them, then it expresses a bi-directional relationship between the nodes and the edge.
• Edges: Edges are the components that are used to represent the relationships between

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