Huajun Zhang

most citedCross-intersecting families and primitivity of symmetric systems

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

collaborators

2 papers

math.CO2011

Nontrivial independent sets of bipartite graphs and cross-intersecting families

Jun Wang, Huajun Zhang

Let $G (X, Y)$ be a connected, non-complete bipartite graph with $∣ X ∣ \leq ∣ Y ∣$ . An independent set $A$ of $G (X, Y)$ is said to be trivial if $A \subseteq X$ or $A \subseteq Y$ . Otherwis…

math.CO2010★ 2 cited

Cross-intersecting families and primitivity of symmetric systems

Jun Wang, Huajun Zhang

Let $X$ be a finite set and $p \subseteq 2^{X}$ , the power set of $X$ , satisfying three conditions: (a) $p$ is an ideal in $2^{X}$ , that is, if $A \in p$ an…