Characterizing Hermitian, normal and EP operators
Dragan S. Djordjević, J. J. Koliha · Filomat · 2007
In this paper further characterizations of Hermitian, normal and EP operators on Hilbert spaces are established. Thus the recent results of O. M. Baksalary and G. Trenkler (Linear Multilin. Algebra, to appear) are extended to the infinite dimensional setting with proofs based on operator matrices.