Weyl's theorems and continuity of spectra in the class of p-hyponormal operators
Volume 143 / 2000
Studia Mathematica 143 (2000), 23-32
DOI: 10.4064/sm-143-1-23-32
Abstract
We show that p-hyponormal operators obey Weyl's and a-Weyl's theorem. Also, we show that the spectrum, Weyl spectrum, Browder spectrum and approximate point spectrum are continuous functions in the class of all p-hyponormal operators.
