Yuejian Peng

collaborators

3 papers

math.CO2026

Complete Characterization on Maximum Pairwise Cross Intersecting Families (I)

Yang Huang, Yuejian Peng

The families $A$ and $B$ are cross intersecting if $A \cap B \neq = \emptyset$ for any $A \in A$ and $B \in B$ . Let $t \geq 2$ and $k_1\geq k_2\geq…

math.CO2024

Intersecting families with full difference sets

Yan zilong, Peng Yuejian

For a family $F$ of subsets of a finite set, define $D (F) = {F ∖ F^{'} : F, F^{'} \in F}$ . A family $F$ is called intersecting if $F…

math.CO2024

Chromatic profiles of odd cycles

Zilong Yan, Yuejian Peng, Xiaoli Yuan

Erdős and Simonovits asked the following question: For an integer $c \geq 2$ and a family of non-bipartite graphs $F$ , what is the infimum of $α$ such that any $\mathcal{F…