56 citations · 269 across the 60 of their papers we have counts for
5 papers · 1 filter
Classification of quaternary Hermitian self-dual codes of length 20
Masaaki Harada, Akihiro Munemasa
A classification of quaternary Hermitian self-dual codes of length 20 is given. Using this classification, a classification of extremal quaternary Hermitian self-dual codes of leng…
Classification of self-dual codes of length 36
Masaaki Harada, Akihiro Munemasa
A complete classification of binary self-dual codes of length 36 is given.
On the classification of weighing matrices and self-orthogonal codes
Masaaki Harada, Akihiro Munemasa
We provide a classification method of weighing matrices based on a classification of self-orthogonal codes. Using this method, we classify weighing matrices of orders up to 15 and…
Classification of generalized Hadamard matrices H(6,3) and quaternary Hermitian self-dual codes of length 18
Masaaki Harada, Clement Lam, Akihiro Munemasa +1
All generalized Hadamard matrices of order 18 over a group of order 3, H(6,3), are enumerated in two different ways: once, as class regular symmetric (6,3)-nets, or symmetric trans…
Residue codes of extremal Type II Z_4-codes and the moonshine vertex operator algebra
Masaaki Harada, Ching Hung Lam, Akihiro Munemasa
In this paper, we study the residue codes of extremal Type II Z_4-codes of length 24 and their relations to the famous moonshine vertex operator algebra. The main result is a compl…