96 citations · 292 across the 62 of their papers we have counts for
67 papers
On the spherical design properties of a - and -polynomial association scheme
Jesse Lansdown, William J. Martin, Akihiro Munemasa +2
We show that the strength as a spherical design of the spherical embedding of a - and -polynomial association scheme with at least three classes with respect to a -polynom…
The Minimal Absolute Value of Sums of Fifth Roots of Unity
Akihiro Munemasa, Guillermo Núñez Ponasso
We determine the minimal absolute value of a non-vanishing sum of fifth roots of unity chosen with repetition, and characterize the corresponding sums. As a function of , th…
Sets of equiangular lines in dimension constructed from
Akihiro Munemasa, Ferenc Szöllősi, Kiyoto Yoshino
In 2023, Greaves, Syatriadi, and Yatsyna found a set of equiangular lines in , breaking the previous record. In 2025, Lin, Munemasa, Taniguchi, and Yoshino co…
Roux schemes which carry association schemes locally
Alexander L. Gavrilyuk, Jesse Lansdown, Akihiro Munemasa +1
A roux scheme is an association scheme formed from a special "roux" matrix and the regular permutation representation of an associated group. They were introduced by Iverson and Mi…
New Constructions of Distance-Biregular Graphs
Blas Fernández, Ferdinand Ihringer, Sabrina Lato +1
We construct a new family of distance-biregular graphs related to hyperovals and a new sporadic example of a distance-biregular graph related to Mathon's perp system. The infinite…
A 2-distance set with 277 points in the Euclidean space of dimension 23
Hong-Jun Ge, Jack Koolen, Akihiro Munemasa
We construct a -distance set with points in the -dimensional Euclidean space having distances and .