Page 9 - Textos de Matemática Vol. 44

A. Kovaˇcec
CONTENTS
On Nat´alia Bebiano da Providˆencia e Costa’s Legacy 1 S. W. Drury
Wielandt’s Theorem and a Resolvent Estimate 29 A. Foˇsner and M. Sal Moslehian
On Approximate Generalized Derivations 33 M. C. Gouveia
Parallel Sums of Operators 45 R. Gow and T. J. Laffey
A Pascal Type Matrix and the Tensor Product of Jordan Blocks 53
M. E. Hochstenbach, D. A. Singer and P. F. Zachlin
Numerical Approximation of the Field of Values of the Inverse of a Large Matrix 59
Kh. D. Ikramov
Solutions to Sesquilinear Matrix Equations: Conspectral Approach 73 M. Karamanlis and P. J. Psarrakos
Birkhoff-James ε-Orthogonality Sets in Normed Linear Spaces 81 N. Krupnik and Y. Spigel
On the Spectrum of Polynomials of Two Non-Commutative Matrices 93 X. Liu and T.-Y. Tam
Connectedness, Hessians and Generalized Numerical Ranges 107
J. K. Merikoski and A. Kovaˇcec
An Upper Bound for the Largest Eigenvalue of a Nonnegative Symmetric Matrix with Zero Diagonal 121
T. Moran and I. Spitkovsky
On Almost Normal Matrices 131
H. Nakazato, A. Kovaˇcec, N. Bebiano and J. da Providˆencia
The Main Diagonal Products of 3 × 3 Normal Matrices whose Eigenvalues are the Third Roots of Unity 145
F. J. Craveiro de Carvalho
Pictureless 153