Bollobás type theorems for hemi-bundled two families

Wenjun Yu, Xiangliang Kong, Yuanxiao Xi +2

Let $\{(A_i,B_i){\}}_{i=1}^m$ be a collection of pairs of sets with $|A_i|=a$ and $|B_i|=b$ for $1\le i\le m$. Suppose that $A_i\cap B_j=\varnothing$ if and only if $i=j$, then by…