%0 Journal Article
%T Almost -Hyponormal Operators with Weyl Spectrum of Area Zero
%A Vasile Lauric
%J International Journal of Mathematics and Mathematical Sciences
%D 2011
%I Hindawi Publishing Corporation
%R 10.1155/2011/801313
%X We define the class of almost -hyponormal operators and prove that for an operator  in this class, (£¿)£¿(£¿) is trace-class and its trace is zero when ¡Ê(0,1] and the area of the Weyl spectrum is zero.
%U http://www.hindawi.com/journals/ijmms/2011/801313/