Gi-Sang Cheon

activity

20142026

most citedMutation effects in ordered trees

2 citations · 9 across the 21 of their papers we have counts for

collaborators

Showing 2021Show all

3 papers · 1 filter

math.CO2021

Structural properties of Toeplitz graphs

Seyed Ahmad Mojallal, Ji-Hwan Jung, Gi-Sang Cheon +2

In this paper, we study structural properties of Toeplitz graphs. We characterize $K_{q}$ -free Toeplitz graphs for an integer $q \geq 3$ and give equivalent conditions for a Toeplitz…

math.RA2021

Decompositions and eigenvectors of Riordan matrices

Gi-Sang Cheon, Marshall M. Cohen, Nikolaos Pantelidis

Riordan matrices are infinite lower triangular matrices determined by a pair of formal power series over the real or complex field. These matrices have been mainly studied as combi…

math.CO2021

On combinatorial properties and the zero distribution of certain Sheffer sequences

Gi-Sang Cheon, Tamás Forgács, Hana Kim +1

We present combinatorial and analytical results concerning a Sheffer sequence with a generating function of the form $G (x, z) = Q (z)^{x} Q (- z)^{1 - x}$ , where $Q$ is a quadratic polynomi…