Gi-Sang Cheon

activity

20172026

most citedRiordan graphs II: Spectral properties

1 citations · 4 across the 15 of their papers we have counts for

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3 papers · 1 filter

math.CO2022★ 1 cited

Matrix periods and competition periods of Boolean Toeplitz matrices

Gi-Sang Cheon, Bumtle Kang, Suh-Ryung Kim +1

In this paper, we study the matrix period and the competition period of Toeplitz matrices over a binary Boolean ring $B = {0, 1}$ . Given subsets $S$ and $T$ of $\{1,\ldot…

math.CO2022

The zero locus and some combinatorial properties of certain exponential Sheffer sequences

Gi-Sang Cheon, Tamás Forgács, Arnauld Mesinga Mwafise +1

We present combinatorial and analytical results concerning a Sheffer sequence with an exponential generating function of the form $G (s, z) = e^{cz s + α z^{2} + β z^{4}}$ , where $α, β, c \in…

math.CO2022

On Toeplitz graphs being line graphs

Gi-Sang Cheon, Bumtle Kang, Suh-Ryung Kim +2

A Toeplitz graph $T_{n} ⟨ t_{1}, t_{2}, \dots, t_{k} ⟩$ is a simple graph with the vertex set $[n]$ such that two vertices $v$ and $w$ are adjacent if and only if $∣ v - w ∣ = t_{i}$ fo…