1999/55/3-4 (7) — DOI: 10.5486/PMD.1999.2051 — pp. 283-298
Full Text Abstract

Operators obeying $a$-Weyl's theorem

Authors: Dragan S. Djordjević

Keywords: essential approximate point spectrum, a-Weyl's theorem, spectral mapping theorems, perturbations, quasihyponormal operators

Mathematics Subject Classification: 47A53, 47A55, 47B20, 47A10