activity
20082026
most citedAssociation schemes related to universally optimal configurations, Kerdock codes and extremal Euclidean line-sets

19 citations · 84 across the 54 of their papers we have counts for

collaborators

56 papers

math.CO2026

-polynomial coherent configurations

Eiichi Bannai, Sho Suda, Yan Zhu

Suda introduced the notion of a -polynomial coherent configuration, which provides a natural and important concept. Subsequently, Lato introduced a notion of a -polynomial co…

math.CO2025

Unbiased weighing matrices of weight

Makoto Araya, Masaaki Harada, Hadi Kharaghani +2

We investigate unbiased weighing matrices of weight and provide a construction method using mutually suitable Latin squares. For , we determine the maximum size among…

math.CO2024

Constructions of self-orthogonal and LCD subspace codes

Dean Crnković, Keita Ishizuka, Hadi Kharaghani +2

Recently, the notions of self-orthogonal subspace codes and LCD subspace codes were introduced, and LCD subspace codes obtained from mutually unbiased weighing matrices were studie…

math.CO2023

Embeddable partial Hadamard matrices related to the projective planes

Hadi Kharaghani, Sho Suda, Yash Shamsundar Khobragade

The existence of a projective plane of order , where is a prime power, is shown to be equivalent to the existence of a balancedly multi-splittable embeddable…

math.CO2023

Uniqueness of an association scheme related to the Witt design on 11 points

Alexander L. Gavrilyuk, Sho Suda

It follows from Delsarte theory that the Witt - design gives rise to a -polynomial association scheme defined on the set of its blocks. In this note w…

math.CO2022

Hadamard matrices related to the projective planes

Hadi Kharaghani, Sho Suda

Let be the order of a (quaternary) Hadamard matrix. It is shown that the existence of a projective plane of order is equivalent to the existence of a balancedly multi-split…