The complete, complete-bipartite, or 2-degenerate induced-subgraph conjecture
The complete, complete-bipartite, or 2-degenerate induced-subgraph conjecture
Let denote the treewidth of . A graph is -degenerate if every induced subgraph has a vertex of degree at most . The complete, complete-bipartite, or 2-degenerate induced-subgraph conjecture. For every integer , every graph of sufficiently large treewidth has an induced subgraph of treewidth which is either complete, complete bipartite, or -degenerate. The source states that this strengthens the general sparse induced-subgraph conjecture, but the abstract says it has been refuted by Chudnovsky and Trotignon (2024).
Sources & referencesView supporting material
Primary source
Sepehr Hajebi, “Chordal graphs, even-hole-free graphs and sparse obstructions to bounded treewidth”, arXiv:2401.01299 (2025).
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