A Reproducible Hadamard Matrix of Order 668: Exact Construction, Verification, and Deterministic Reproduction Packet
This archive provides the files, data, and software needed to reproduce and verify a Hadamard matrix of order 668. A Hadamard matrix is a square matrix whose entries are either positive one or negative one and whose rows are mutually orthogonal. For a matrix of order 668, this means that multiplying the matrix by its t...