Listar por autor 

Listar por autor "Gigola, Silvia"

Mostrando ítems 1-2 de 2

    • Inverse eigenvalue problem for normal J-hamiltonian matrices 

      Gigola, Silvia; Lebtabi, Leila ; Thome, Néstor (Applied Mathematics Letters, 10/2015)
      A complex square matrix A is called J-hamiltonian if AT is hermitian where J is a normal real matrix such that J(2) = -I-n. In this paper we solve the problem of finding J-hamiltonian normal solutions for the inverse ...

    • The inverse eigenvalue problem for a Hermitian reflexive matrix and the optimization problem 

      Gigola, Silvia; Lebtabi, Leila ; Thome, Néstor (Journal of Computational and Applied Mathematics, 01/2016)
      The inverse eigenvalue problem and the associated optimal approximation problem for Hermitian reflexive matrices with respect to a normal {k+1}-potent matrix are considered. First, we study the existence of the solutions ...