1 citations · 2 across the 10 of their papers we have counts for
4 papers · 1 filter
On competition indices and periods of multipartite tournaments
Ji-Hwan Jung, Suh-Ryung Kim, Hyesun Yoon
In this paper, we compute competition indices and periods of multipartite tournaments. We first show that the competition period of an acyclic digraph is one and is a…
Encoding labelled -Riordan graphs by words and pattern-avoiding permutations
Kittitat Iamthong, Ji-Hwan Jung, Sergey Kitaev
The notion of a -Riordan graph generalizes that of a Riordan graph, which, in turn, generalizes the notions of a Pascal graph and a Toeplitz graph. In this paper we introduce th…
Oriented Riordan graphs and their fractal property
Ji-Hwan Jung
In this paper, we use the theory of Riordan matrices to introduce the notion of an oriented Riordan graph. The oriented Riordan graphs are a far-reaching generalization of the well…
Counting independent sets in Riordan graphs
Gi-Sang Cheon, Ji-Hwan Jung, Bumtle Kang +4
The notion of a Riordan graph was introduced recently, and it is a far-reaching generalization of the well-known Pascal graphs and Toeplitz graphs. However, apart from a certain su…