Consider a 3-uniform hypergraph <i>H</i> with <i>n</i> vertices. A tight Hamilton cycle <i>C</i> ⊂ <i>H</i> is a collection of <i>n</i> edges for which there is an ordering of the vertices… (More)
Let HPn,m,k be drawn uniformly from all m-edge, k-uniform, k-partite hypergraphs where each part of the partition is a disjoint copy of [n]. We let HP (κ) n,m,k be an edge colored version, where we… (More)
We consider a variant of the game of Cops and Robbers, called Lazy Cops and Robbers, where at most one cop can move in any round. We investigate the analogue of the cop number for this game, which we… (More)
Erdős, Gyárfás, and Pyber (1991) conjectured that every r-colored complete graph can be partitioned into at most r − 1 monochromatic components; this is a strengthening of a conjecture of Lovász… (More)
In this note, we determine the maximum number of edges of a k-uniform hypergraph, k ≥ 3, with a unique perfect matching. This settles a conjecture proposed by Snevily.
The problem of computing periods in words, or finite sequences of symbols from a finite alphabet, has important applications in several areas including data compression, string searching and pattern… (More)
We consider a variant of the game of Cops and Robbers, called Lazy Cops and Robbers, where at most one cop can move in any round. We investigate the analogue of the cop number for this game, which we… (More)
A proper 2-tone k-coloring of a graph is a labeling of the vertices with elements from ( [k] 2 ) such that adjacent vertices receive disjoint labels and vertices distance 2 apart receive distinct… (More)