On numerical range and spectral properties of some classes of operators in hilbert spaces
Emmanuel Kipruto, Linety N. Muhati, Collins Meli · International Journal of Statistics and Applied Mathematics · 2020
It is a well known fact in operator theory that the numerical range and spectral properties are significant in determining the behavior of different classes of operators. In this paper we focus mainly on the class of compact operators in Hilbert spaces. AMS subject classification 47B47, 47A30, 47B20.