2 papers
math.CO2025
The Terwilliger algebra of digraphs I -- Hamming digraph
Tsuyoshi Miezaki, Hiroshi Suzuki, Keisuke Uchida
In the present paper, we define the Terwilliger algebra of digraphs. Then, we determine the irreducible modules of the Terwilliger algebra of a Hamming digraph . As is we…
math.CO2025
The graph zeta functions with respect to the group matrix of a finite group
Tsuyoshi Miezaki, Iwao Sato
In this paper, we present formulas for the edge zeta function and the second weighted zeta function with respect to the group matrix of a finite abelian group . Furthermore, we…