{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is a subgraph?","a":"A subgraph refers to a graph composed of a subset of vertices and edges between these vertices in a given graph. A subgraph can contain both vertices and edges of the original graph, or it can contain only vertices or edges of the original graph. The concept of a subgraph is of great significance in  graph theory, as it helps us study the properties and structure of graphs. According to the definition, if the vertex set and edge set of the subgraph G' of graph G are both subsets of the vertex set and edge set of G, then we say that G' is a subgraph of G. Subgraphs can be used to represent many-to-many relationships and are widely used in analyzing various attribute characteristics of graphs."}]}],"pr":"6eb7035789fd97cb34927388352a1a681447b2191e4de2f47952bb9d03ab373c"}