Chi Hoi Yip

most citedSperner systems with restricted differences

1 citations · 1 across the 2 of their papers we have counts for

collaborators

7 papers

math.CO2026★ 1 cited

Sperner systems with restricted differences

Zixiang Xu, Chi Hoi Yip

Let $F$ be a family of subsets of $[n]$ and $L$ be a subset of $[n]$ . We say $F$ is an $L$ -differencing Sperner system if $∣ A ∖ B ∣ \in L$ for any distinct…

math.AG2026

Hypersurfaces passing through the Galois orbit of a point

Shamil Asgarli, Jonathan Love, Chi Hoi Yip

Asgarli, Ghioca, and Reichstein proved that if $K$ is a field with $∣ K ∣ > 2$ , then for any positive integers $d$ and $n$ , and separable field extension $L / K$ with degree $m=\binom{n+…

math.CO2025

Two-Distance Sets over Finite Fields

Jozsef Solymosi, Chi Hoi Yip

We study two-distance sets in standard $d$ -dimensional quadratic spaces over finite fields. In characteristic $3$ , we construct sets attaining the full Larman--Rogers--Seidel bound…

math.CO2025

Intersective sets over abelian groups

Zixiang Xu, Chi Hoi Yip

Given a finite abelian group $G$ and a subset $J \subset G$ with $0 \in J$ , let $D_{G} (J, N)$ be the maximum size of $A \subset G^{N}$ such that the difference set $A - A$ and $J^{N}$ ha…

math.AG2025

Blocking sets from a union of plane curves

Shamil Asgarli, Dragos Ghioca, Chi Hoi Yip

Motivated by a question of ErdÅs on blocking sets in a projective plane that intersect every line only a few times, several authors have used unions of algebraic curves to constru…

math.AG2025

Proportion of blocking curves in a pencil

Shamil Asgarli, Dragos Ghioca, Chi Hoi Yip

Let $L$ be a pencil of plane curves defined over $F_{q}$ with no $F_{q}$ -points in its base locus. We investigate the number of curves in $L$ whos…