7 papers
Numerical range and invariant subspaces of weighted composition operators on the Hardy space of Dirichlet series
Sudeshna Lahiri, Sarita Ojha, Subhadip Halder +1
In this paper, we study various results on numerical range of weighted composition operators on Hardy space of Dirichlet series. Certain conditions are provided under which the num…
On the numerical radius of a class of weighted shift operators
Arobinda Ghosh, Riddhick Birbonshi, Sarita Ojha
In this paper, we derive some bounds on numerical radius of the weighted shift operator with weights where and . Furt…
Improved upper bounds for the Berezin numbers of operators on reproducing kernel Hilbert spaces
Riddhick Birbonshi, Sumon Ghosh, Fuad Kittaneh +2
In this article, several upper bounds for the Berezin numbers of bounded linear operators on reproducing kernel Hilbert spaces are obtained through the use of interpolation paths o…
Estimation of -Berezin number and -Berezin norm inequalities via Moore-Penrose inverse
Sumon Ghosh, Swastika Saha Mondal, Sarita Ojha
In this article, we establish the -Berezin number and -Berezin norm inequalities for bounded linear operators on a reproducing kernel Hilbert space using the Moore-Penrose in…
On posinormality of weighted composition-differentiation operators on
Gour Hait, Sarita Ojha, Nirupam Ghosh +1
In this article, the posinormality and coposinormality of weighted composition-differentiation operators on Hardy space are investigated. It is observed that whil…
Iterated Aluthge transforms of some composition operators on weighted Bergman spaces
Sudeshna Lahiri, Sarita Ojha, Riddhick Birbonshi
In this paper, we compute the iterated Aluthge transforms of the composition operator on the weighted Bergman spaces , wh…