Yanbo Zhang

activity

20182026

most citedProof of a Conjecture on Online Ramsey Numbers of Paths

2 citations · 3 across the 10 of their papers we have counts for

collaborators

Showing 2024Show all

3 papers · 1 filter

math.CO2024

Disproofs of four Gallai-Ramsey-type conjectures

Yanbo Zhang, Yaojun Chen

As a significant variation of Ramsey numbers, the Gallai-Ramsey number $G R_{k} (H)$ refers to the smallest positive integer $r$ such that, by coloring the edges of $K_{r}$ with at most…

math.CO2024

Size Ramsey numbers of small graphs versus fans or paths

Yufan Li, Yanbo Zhang, Yunqing Zhang

For two graphs $G_{1}$ and $G_{2}$ , the size Ramsey number $r^(G_{1}, G_{2})$ is the smallest positive integer $m$ for which there exists a graph $G$ of size $m$ such that for any red-…

math.CO2024

Matching-star size Ramsey numbers under connectivity constraint

Fanghua Guo, Yanbo Zhang, Yunqing Zhang

Recently, Caro, Patkós, and Tuza (2022) introduced the concept of connected Turán number. We study a similar parameter in Ramsey theory. Given two graphs $G_{1}$ and $G_{2}$ , the size…