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Everything about Line graph

Graph representing edges of another graph

In the mathematical discipline of graph theory, the line graph of an undirected graph G is another graph L(G) that represents the adjacencies between edges of G. L(G) is constructed in the following way: for each edge in G, make a vertex in L(G); for every two edges in G that have a vertex in common, make an edge between their corresponding vertices in L(G). Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Line graphA 5-minute orientation
  2. Skim a recent paper: The emerging graph neural networks for intelligent fault diagnostics and prognostics: A guideline and a benchmark studyInfluential work since 2022
  3. Pick up a classic book: Wave PhenomenaThe most-reprinted book on the subject
  4. Read the landmark paper: Depth-First Search and Linear Graph AlgorithmsCited 4,769 times
  5. Go sideways: Glossary of graph theoryA closely related topic
  6. Go sideways: Perfect graphA closely related topic

📖 Definitions

Noun A graph in which a series of connected straight lines connect points, each of which represents the value of a particular variable as a function of another variable.

Noun A graph L(G) which is derived from a given non-oriented graph G such that the vertices of L(G) represent edges of G and so that a clique in L(G) represents a common end-vertex shared by a set of represented edges. (A star subgraph in G transforms into a clique in L(G).) A graph which is the line graph (in the above sense) of some other graph.

Noun A graph which is the line graph (in the above sense) of some other graph.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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