Yuejian Peng

collaborators

3 papers

math.CO2025

A note on degree conditions for Ramsey goodness of trees

Zhidan Luo, Yuejian Peng

For given graphs $G_{1}, G_{2}$ and $G$ , let $G \to (G_{1}, G_{2})$ denote that each red-blue-coloring of $E (G)$ yields a red copy of $G_{1}$ or a blue copy of $G_{2}$ . Arag…

math.CO2025

Spectral extremal graphs for $F_{6}$ -free graphs with even size

Loujun Yu, Yuejian Peng

Let $F_{l}$ be the fan graph obtained by joining a vertex with a path on $l - 1$ vertices. Yu, Li and Peng [Discrete Math. 346 (2023)] conjectured that if the number of edges of $G$ is…

math.CO2025

Strong spectral stabilities for $C_{2 k + 1}$ -free graphs

Lantao Zou, Yongtao Li, Yuejian Peng

A stability result due to Ren, Wang, Wang and Yang [SIAM J. Discrete Math. 38 (2024)] shows that if $3 \leq r \leq 2 k$ and $n \geq 318 (r - 2)^{2} k$ , and $G$ is a $C_{2 k + 1}$ -free graph on $…

A note on degree conditions for Ramsey goodness of trees

Spectral extremal graphs for F6​-free graphs with even size

Strong spectral stabilities for C2k+1​-free graphs

Spectral extremal graphs for $F_{6}$ -free graphs with even size

Strong spectral stabilities for $C_{2 k + 1}$ -free graphs