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Asymptotically optimal approximate Hadamard matrices

5 days ago
https://arxiv.org/abs/2511.14653
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  • #Condition number
  • #Combinatorics
  • #Hadamard matrices
  • Study of approximate Hadamard matrices, which are well-conditioned n×n matrices with entries in {±1}.
  • Demonstration that the smallest possible condition number approaches 1 as n→∞.
  • Identification of explicit infinite families of approximate Hadamard matrices.
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