graph vs directed acyclic graph
A graph is a mathematical structure consisting of a set of vertices or nodes connected by edges. A directed acyclic graph (DAG) is a specific type of graph where the edges have a specific direction and there are no cycles or loops. In other words, a DAG is a graph with directed edges that does not contain any paths that start and end at the same node. So, the main difference between a graph and a directed acyclic graph is that a graph can have both directed and undirected edges, and it may contain cycles, while a DAG has only directed edges and no cycles.
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