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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 CrnkoviÄ, 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…