Xiangjie Yi

collaborators

2 papers

math.MG2026

Norm rigidity and equality cases for the Dyn--Farkhi inequality

Mark Meyer

For a convex body $K \subset R^{2}$ that is symmetric with respect to the origin, and for a nonempty set $S \subset R^{2}$ , we study the $K$ -Hausdorff distance from conve…

math.CO2026

A Linear Lower Bound for Dominating Sets in $k$ -Majority Tournaments

Jiangdong Ai, Xiangjie Yi

A $k$ -majority tournament on a finite vertex set is defined by $2 k - 1$ linear orders, with $u \to v$ when $u$ lies above $v$ in at least $k$ of the orders. Let $F (k)$ be the maximum,…

Norm rigidity and equality cases for the Dyn--Farkhi inequality

A Linear Lower Bound for Dominating Sets in k-Majority Tournaments

A Linear Lower Bound for Dominating Sets in $k$ -Majority Tournaments