Outerplanar graphs with positive Lin-Lu-Yau curvature George Brooks , Fadekemi Osaye , Anna Schenfisch , Zhiyu Wang , and Jing Yu Mar 2024 arXiv Hypergraph Turán problems in ℓ2-norm, the Kleitman-West problem and Erdős-Ko-Rado George Brooks , and William Linz Jan 2024 arXiv On the maximum second eigenvalue of outerplanar graphs George Brooks , Maggie Gu , Jack Hyatt , William Linz , and Linyuan Lu Sep 2023 arXiv