Directed graphs model relationships from "summary" of Introduction to Graph Theory by Douglas Brent West
Directed graphs are a fundamental concept in graph theory that play a crucial role in modeling various relationships. In a directed graph, edges have a direction associated with them, indicating a one-way relationship between two vertices. These relationships can represent numerous scenarios in real-world applications, ranging from social networks to transportation systems. The direction of edges in a directed graph provides valuable information about the nature of the relationship between vertices. For example, in a social network, a directed edge from vertex A to vertex B can represent a "follows" relationship, indicating that A follows B. This directionality is vital in capturing the asymmetry inherent in many relationships, such as the flow of information or influence between individuals. Moreover, directed ...
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