The determinant of the sum of two normal matrices with prescribed eigenvalues

  • Bebiano N
  • Queiró J
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Given complex numbers α1,...,αn, β1,...,βn, what can we say about the determinant of A+B, where A (B) is an n×n normal matrix with eigenvalues α1,...,αn (β1,...,βn)? Some partial answers are offered to this question. © 1985.

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  • Natália Bebiano

  • João Filipe Queiró

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