Everything About ___
Live briefing

Everything about Cograph

Graph formed by complementation and disjoint union

In graph theory, a cograph, or complement-reducible graph, or P4-free graph, is a graph that can be generated from the single-vertex graph K1 by complementation and disjoint union. That is, the family of cographs is the smallest class of graphs that includes K1 and is closed under complementation and disjoint union. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: CographA 5-minute orientation
  2. Skim a recent paper: On finite groups whose power graph is a cographInfluential work since 2022
  3. Pick up a classic book: A cograph approach to examination schedulingThe most-reprinted book on the subject
  4. Read the landmark paper: A simple linear time algorithm for cograph recognitionCited 70 times
  5. Go sideways: Complement graphA closely related topic
  6. Go sideways: Trivially perfect graphA closely related topic

📖 Definitions

Noun A graph formed from another by complementation and disjoin union.

Noun The dual of the graph of a function. It is an ordinate-indexed partition of the disjoint union of the set of abscissas and ordinates of the function.

🏆 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.

🔗 Related topics