On eigenvalues of symmetric (+1,-1) matrices

DOI10.1007/BF02756827zbMath0281.15003OpenAlexW2049248547MaRDI QIDQ1843613

Alan J. Hoffman

Publication date: 1974

Published in: Israel Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf02756827

Mathematics Subject Classification ID

Combinatorial aspects of matrices (incidence, Hadamard, etc.) (05B20) Eigenvalues, singular values, and eigenvectors (15A18) Graph theory (05C99) Matrices of integers (15B36)

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