Erfei Yue

collaborators

3 papers

math.CO2025

Some results on minimum saturated graphs

Chenke Zhang, Qing Cui, Jinze Hu +2

Let $G$ be a graph and $F$ be a family of graphs. We say a graph $G$ is $F$ -saturated if $G$ does not contain any member in $F$ and for any $e\in E(\o…

math.CO2025

Poset saturation of unions of chains

Shengjin Ji, Balázs Patkós, Erfei Yue

A family $G$ of sets is a(n induced) copy of a poset $P = (P, ⩽)$ if there exists a bijection $b : P \to G$ such that $p ⩽ q$ holds if and only…

math.CO2024

On Bollobás-type theorems of $d$ -tuples

Erfei Yue

In 1965, Bollobás proved that for a Bollobás set-pair system ${(A_{i}, B_{i}) ∣ i \in [m]}$ , the maximum value of $\sum_{i = 1}^{m} (A _{i} ∣ A _{i} ∣ + ∣ B _{i} ∣)^{- 1}$ is $1$ . Hegedüs and Frank…

Some results on minimum saturated graphs

Poset saturation of unions of chains

On Bollobás-type theorems of d-tuples

On Bollobás-type theorems of $d$ -tuples