سيد احمد سيده

On the 􀀀 α, β
-Euclidean operator radius and its applications

Higher order complex symmetric operators and some of their related classes of operators

Some results on polynomially Drazin normal operators

On a class of Drazin invertible operators for which $$\left( S^{*}\right) ^{2}\left( S^{D}\right) ^{2}=\left( S^{*}S^{D}\right) ^{2}$$

Advancements in the generalization of m-isometries: introducing the q-partial-(m, A)- isometry class

M-hyponormality in several variables operator theory

Similarity of C1: Operators and the Hyperinvariant Subspace Problem

k–QUASI–A–PARANORMAL OPERATORS IN SEMI–HILBERTIAN SPACES

On (m, C)-Isometric Commuting Tuples of Operators on a Hilbert Space