The line graph L of an undirected graph G is the graph whose vertex set is the edge set of the original graph G and in which two vertices are adjacent if their corresponding edges share a common endpoint in G.
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The object lineGraph is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Graphs.m2:2335:0.