Cheng Yeaw Ku

activity

20092013

most citedOn

r

-cross

t

-intersecting families for weak compositions

1 citations · 1 across the 3 of their papers we have counts for

collaborators

3 papers

math.CO2013★ 1 cited

On $r$ -cross $t$ -intersecting families for weak compositions

Kok Bin Wong, Cheng Yeaw Ku

Let $N_{0}$ be the set of non-negative integers, and let $P (n, l)$ denote the set of all weak compositions of $n$ with $l$ parts, i.e., $P(n,l)=\{ (x_1,x_2,\dots, x_l)\in\math…

math.CO2011

An Analogue of Hilton-Milner Theorem for Set Partitions

Cheng Yeaw Ku, Kok Bin Wong

Let $B (n)$ denote the collection of all set partitions of $[n]$ . Suppose $A \subseteq B (n)$ is a non-trivial $t$ -intersecting family of set partitions…

math.CO2009

Group Marriage Problem

Cheng Yeaw Ku, Kok Bin Wong

Let $G$ be a permutation group acting on $[n] = {1, ..., n}$ and $V = {V_{i} : i = 1, ..., n}$ be a system of $n$ subsets of $[n]$ . When is there an element $g \in G$ so tha…

On r-cross t-intersecting families for weak compositions

An Analogue of Hilton-Milner Theorem for Set Partitions

Group Marriage Problem

On $r$ -cross $t$ -intersecting families for weak compositions