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  "body": "\n## Summary\n\nModular graph, a graph in which each triple of vertices has at least one median vertex that belongs to shortest paths between all pairs of the triple.\n\nModular decomposition, a decomposition of a graph into subgraphs within which all vertices connect to the rest of the graph in the same way.\n\nModularity of a graph clustering, the difference of the number of cross-cluster edges from its expected value.\n",
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