5 papers
Constructions of self-orthogonal and LCD subspace codes
Dean Crnković, 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…
On the classification of skew Hadamard matrices of order 36 and related structures
Makoto Araya, Masaaki Harada, Hadi Kharaghani +2
Two skew Hadamard matrices are considered {\sf SH}-equivalent if they are similar by a signed permutation matrix. This paper determines the number of {\sf SH}-inequivalent skew Had…
On optimal constant weight codes derived from -circulant balanced generalized weighing matrices
Hadi Kharaghani, Thomas Pender, Vladimir D. Tonchev
A family of -circulant balanced weighing matrices with classical parameters is used for the construction of optimal constant weight codes over an alphabet of size and leng…
Strongly regular decompositions and symmetric association schemes of a power of two
Hadi Kharaghani, Sara Sasani, Sho Suda
For any positive integer , the complete graph on vertices is decomposed into commuting strongly regular graphs, which give rise to a symmetric associatio…
Mutually Unbiased Bush-type Hadamard Matrices and Association Schemes
Hadi Kharaghani, Sara Sasani, Sho Suda
It was shown by LeCompte, Martin, and Oweans in 2010 that the existence of mutually unbiased Hadamard matrices and the identity matrix, which coincide with mutually unbiased bases,…