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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
A survey of complex generalized weighing matrices and a construction of quantum error-correcting codes
Ronan Egan
Some combinatorial designs, such as Hadamard matrices, have been extensively researched and are familiar to readers across the spectrum of Science and Engineering. They arise in di…