activity
19972026
most citedModular Terwilliger algebras of association schemes

10 citations · 15 across the 13 of their papers we have counts for

collaborators

13 papers

math.GR2026

Classification of skew left braces with additive group isomorphic to the infinite dihedral group

Akihide Hanaki, Yuto Sakata, Hiroki Yoshino

We classify all skew left braces with additive group isomorphic to the infinite dihedral group. There are ten isomorphism classes.

math.CO2025

On new proper Jordan schemes related to quaternion and octonion algebras

Akihide Hanaki, Masayoshi Yoshikawa

We present a construction of a Jordan scheme from an elementary abelian -group of rank and a -matrix of order that satisfies a specified condition. We then p…

math.CO2025

3-Designs from PSL(2,q) with cyclic starter blocks

Akihide Hanaki, Kenji Kobayashi, Akihiro Munemasa

We consider when the projective special linear group over a finite field defines a -design with a cyclic starter block. We will show that the equivalences of the existence of su…

math.CO2024

Weights on homogeneous coherent configurations

Akihide Hanaki

D. G. Higman generalized a coherent configuration and defined a weight. In this article, we will modify the definition and investigate weights on coherent configurations. If our we…

math.CO2023

Construction of rank self-dual association schemes inducing three partial geometric designs

Akihide Hanaki

B. Xu characterized rank self-dual association schemes inducing three partial geometric designs by their character tables. We construct such association schemes as Schur rings…

math.CO2021★ 2 cited

Terwilliger algebras and some related algebras defined by finite connected simple graphs

Akihide Hanaki, Masayoshi Yoshikawa

For a finite connected simple graph, the Terwilliger algebra is a matrix algebra generated by the adjacency matrix and idempotents corresponding to the distance partition with resp…