Tian Yao

activity

20202026

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2 papers · 1 filter

math.CO2025

Cross-intersection theorems for uniform partitions of finite sets

Tian Yao, Mengyu Cao, Haixiang Zhang

A set partition is $c$ -uniform if every block has size $c$ . Two families of $c$ -uniform partitions of a finite set are said to be cross $t$ -intersecting if two partitions from diff…

math.CO2025

$s$ -almost cross- $t$ -intersecting families for finite sets

Dehai Liu, Kaishun Wang, Tian Yao

Two families $F$ and $G$ of $k$ -subsets of an $n$ -set are called $s$ -almost cross- $t$ -intersecting if each member in $F$ (resp. $G$ ) is $t$ -…

Cross-intersection theorems for uniform partitions of finite sets

s-almost cross-t-intersecting families for finite sets

$s$ -almost cross- $t$ -intersecting families for finite sets