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Πλοήγηση ανά Συγγραφέα "Maroulas, J."

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    • The generalized Levinger transformation 

      Adam, M.; Maroulas, J. (2010)
      In this paper, we present new results relating the numerical range of a matrix A with the generalized Levinger transformation L(A, alpha, beta) = alpha H(A) + beta S(A), where H(A) and S(A), are, respectively the Hermitian ...

    • LIMITED APPROXIMATION OF NUMERICAL RANGE OF NORMAL MATRIX 

      Adam, M.; Maroulas, J. (2010)
      Let A be an n x n normal matrix, whose numerical range NR[A] is a k-polygon. If a unit vector v is an element of W subset of C(n), with dimW = k and the point v*Av is an element of IntNR[A], then NR[A] is circumscribed to ...