Hong-Kui Wang

collaborators

2 papers

math.CO2024

The maximal sum of sizes of cross intersecting families for multisets

Hongkui Wang, Xinmin Hou

Let $k$ , $t$ and $m$ be positive integers. A $k$ -multiset of $[m]$ is a collection of $k$ elements of $[m]$ with repetition and without ordering. We use $\left(\binom {[m]}{k}\righ…

math.CO2022

Maximal fractional cross-intersecting families

Hongkui Wang, Xinmin Hou

Given an irreducible fraction $\frac{c}{d} \in [0, 1]$ , a pair $(A, B)$ is called a $\frac{c}{d}$ -cross-intersecting pair of $2^{[n]}$ if $\mathcal{A}, \mathcal{B…