Menglong Zhang

activity

20222026

collaborators

Showing 2023Show all

2 papers · 1 filter

math.CO2023

Cyclic relative difference families with block size four and their applications

Chenya Zhao, Binwei Zhao, Yanxun Chang +3

Given a subgroup $H$ of a group $(G, +)$ , a $(G, H, k, 1)$ difference family (DF) is a set $F$ of $k$ -subsets of $G$ such that $\{f-f':f,f'\in F, f\neq f',F\in \mathcal F\}=G\…

math.CO2023

A note on non-empty cross-intersecting families

Menglong Zhang, Tao Feng

The families $F_{1} \subseteq (k _{1} [ n ]), F_{2} \subseteq (k _{2} [ n ]), \dots, F_{r} \subseteq (k _{r} [ n ])$ are said to be cross-intersecting if $|F_i…