Jianchu Zeng

collaborators

2 papers

math.CO2026

On average hitting time and Kemeny's constant for weighted trees

Ji Zeng

For a connected graph $G$ , the average hitting time $I^\pm (G)$ and the Kemeny's constant $I^º (G)$ are two similar quantities, both measuring the time for the random walk on $G$ to trav…

math.CO2024

Note on disjoint faces in simple topological graphs

Ji Zeng

We prove that every $n$ -vertex complete simple topological graph generates at least $I^c ◯ (n)$ pairwise disjoint $4$ -faces. This improves upon a recent result by Hubard and Suk. As an…