Heng Li

collaborators

2 papers

math.CO2026

Transversal Hamilton cycles in digraph collections

Yangyang Cheng, Heng Li, Wanting Sun +1

Given a collection $D = {D_{1}, D_{2}, \dots, D_{m}}$ of digraphs on the common vertex set $V$ , an $m$ -edge digraph $H$ with vertices in $V$ is \textit{transversal} in $\mathcal…

math.CO2026

Infinitely many accumulation points of codegree TurÃ¡n densities

Heng Li, Weichan Liu, Bjarne SchÃ¼lke +1

The codegree TurÃ¡n density $I^^{3} (F)$ of a $k$ -graph $F$ is the smallest $I^^{3} \in [0, 1)$ such that every $k$ -graph $H$ with $I^´_{k - 1} (H) \geq (I^^{3} + o (1)) ∣ V (H) ∣$ contains a copy of…