On an Inverse Eigenvalue Problem for Unitary

نویسندگان

  • Gregory S. Ammar
  • Chunyang He
چکیده

We show that a unitary upper Hessenberg matrix with positive subdiago-nal elements is uniquely determined by its eigenvalues and the eigenvalues of a modiied principal submatrix. This provides an analog of a well-known result for Jacobi matrices.

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تاریخ انتشار 1992