The paper "A spectral version of the Moore problem for bipartite regular graphs" with Sebastian Cioabă and Jack Koolen has been published in Algebraic Combinatorics.
RIMS conference "Research on algebraic combinatorics, related groups and algebras" will be held from December 16 to December 19, 2019. See here for the details.
The paper "Largest regular multigraphs with three distinct eigenvalues" has been published in Discrete math.
I have joined the Editorial board of Advances and Applications in Discrete Mathematics.
The paper "Complex spherical codes with three inner products" with Sho Suda has been accepted for publication in Discrete & Computational Geometry.
The paper is available on arXiv: 1805.01056.
The paper is available on arXiv: 1704.02675.
The paper "Maximal m-distance sets containing the representation of the Hamming graph H(n,m)" has been published on Discrete math. Online first
(0, ±1) ベクトルの最大距離を避ける最大部分集合について
The paper "Maximizing the order of a regular graph of given valency and second eigenvalue" with Sebastian M. Cioabă, Jack H. Koolen, and Jason R. Vermette has been accepted for publication in SIAM J. Discrete Math.
The paper is available on arXiv:1602.01215.
The paper "Polynomial Properties on Large Symmetric Association Schemes" has been published.
The paper "On the largest subsets avoiding the diameter of (0,±1)-vectors" with Saori Adachi
has been accepted for publication in ARS MATHEMATICA CONTEMPORANEA.