Bounded twin-width three versus tree-independence number for star-free graph classes

Let d2d\geq 2, and let G\mathcal{G} be a K1,dK_{1,d}-free graph class of twin-width at most 33. Twin-width conjecture. Does G\mathcal{G} have bounded tree-independence number? The paper notes that the analogous statement is known for twin-width 11, while twin-width at most 44 already permits unbounded tree-independence number; the case of twin-width at most 33 is left open.

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Primary source

Kenny Bešter Štorgel, Mujin Choi, Hidde Koerts and Ðorđe Vasić, “Tree-independence number of K_1,d-free graph classes”, arXiv:2606.20256 (2026).

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