Upper bounds for the numerical radii of the tensor products of operators
Messaoud Guesba, Fuad Kıttaneh
Productions scientifiques
Structural properties of 2-C-normal operators
Messaoud Guesba, Ismail Lakehal, Sid Ahmed Ould Ahmed Mahmoud
2025Prépublication Accès ouvert
On A-numerical radius inequalities of semi-Hilbert space operators
Messaoud Guesba, Mohammad Sababheh
The notion of $$\infty $$-invertibility and $$\infty $$-isometric operators
On the classes of $n$-Nadir's and $n^*$-Nadir's operators on Hilbert spaces
A. Smati, Messaoud Guesba
A new generalization of the class of $$m-$$symmetric operators
Improved bounds for the numerical radius via Maligranda inequality
Amar Ghris, Abdelouahab Manour
Some results on polynomially Drazin normal operators
Sid Ahmed Ould Ahmed Mahmoud, Messaoud Guesba, Naeem Ahmad
A-Davis–Wielandt Radius Bounds of Semi-Hilbertian Space Operators
Messaoud Guesba, Somdatta Barik, Pintu Bhunia, Kallol Paul
Daugavet’s equation and Jordan elementary operators
Zakaria Taki, Mohamed Chraïbi Kaadoud, Messaoud Guesba
On the (α, β)-Euclidean operator radius and its applications
Messaoud Guesba, Sid Ahmed Ould Ahmed Mahmoud
A-Numerical Radius of Semi-Hilbert Space Operators
Messaoud Guesba, Pintu Bhunia, Kallol Paul
Refinements of some inequalities involving Berezin norms and Berezin number and related questions
Mübariz Garayev, Messaoud Guesba
On a class of Drazin invertible operators for which $$\left( S^{*}\right) ^{2}\left( S^{D}\right) ^{2}=\left( S^{*}S^{D}\right) ^{2}$$
Messaoud Guesba, Sid Ahmed Ould Ahmed Mahmoud
On some inequalities for numerical radius of semi-Hilbert space multioperators
Messaoud Guesba, Sid Ahmed Ould Ahmed Mahmoud
A-numerical radius inequalities and A-translatable radii of semi-Hilbert space operators
Messaoud Guesba, Pintu Bhunia, Kallol Paul
A note on the maximal numerical range of operators for a sesquilinear form
Messaoud Guesba, Mohamed Chraïbi Kaadoud, Abderrahim Baghdad
Some generalizations of A-numerical radius inequalities for semi-Hilbert space operators
On some numerical radius inequalities for normal operators in Hilbert spaces
Paranormal operators in semi-Hilbertian spaces
Messaoud Guesba, Sid Ahmed Ould Ahmed Mahmoud