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Determinantal conjecture

From Wikipedia, the free encyclopedia

In mathematics, the determinantal conjecture of Marcus (1972) and de Oliveira (1982) asks whether the determinant of a sum A + B of two n by n normal complex matrices A and B lies in the convex hull of the n! points Πi (λ(A)i + λ(B)σ(i)), where the numbers λ(A)i and λ(B)i are the eigenvalues of A and B, and σ is an element of the symmetric group Sn.

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Transcription

References

  • de Oliveira, G.N. (1982), "Research problem: Normal matrices", Linear and Multilinear Algebra, 12: 153–154
  • Marcus, Marvin (1972), "Derivations, Plücker relations, and the numerical range", Indiana University Mathematics Journal, 22: 1137–1149, ISSN 0022-2518, MR 0314862


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This page was last edited on 12 August 2023, at 18:52
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