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cs.CR2023
Butson Hadamard matrices, bent sequences, and spherical codes
Minjia Shi, Danni Lu, Andrés Armario +3
We explore a notion of bent sequence attached to the data consisting of an Hadamard matrix of order defined over the complex roots of unity, an eigenvalue of that matr…
math.CO2023★ 3 cited
Quasi-cyclic perfect codes in Doob graphs and special partitions of Galois rings
Minjia Shi, Xiaoxiao Li, Denis S. Krotov +1
The Galois ring GR is the residue ring , where is a basic primitive polynomial of degree over . For any odd larger than , we construct…