26 citations · 53 across the 32 of their papers we have counts for
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math.CO2013★ 2 cited
Weighing matrices and spherical codes
Hiroshi Nozaki, Sho Suda
Mutually unbiased weighing matrices (MUWM) are closely related to an antipodal spherical code with 4 angles. In the present paper, we clarify the relationship between MUWM and the…
math.CO2013
Polynomial properties on large symmetric association schemes
Hiroshi Nozaki
In this paper we characterize "large" regular graphs using certain entries in the projection matrices onto the eigenspaces of the graph. As a corollary of this result, we show that…