2 papers
math.CO2026
The maximum size of the partial ground set of skew Bollobás systems
Yu Fang, Tao Feng, Xiaomiao Wang
A skew Bollobás system is a collection of pairs of disjoint subsets of such that for any $1\leq i<j\leq m…
math.CO2024
Variations on Bollobás systems of -partitions
Yu Fang, Xiaomiao Wang, Tao Feng
This paper investigates five kinds of systems of -partitions of , including symmetric Bollobás systems, strong Bollobás systems, Bollobás systems, skew Bollobás systems…