3 citations · 7 across the 7 of their papers we have counts for
11 papers
Numerical radius inequalities for products and sums of semi-Hilbertian space operators
Pintu Bhunia, Kais Feki, Kallol Paul
New inequalities for the -numerical radius of the products and sums of operators acting on a semi-Hilbert space, i.e. a space generated by a positive semidefinite operator ,…
smoothness on polyhedral Banach spaces
Subhrajit Dey, Arpita Mal, Kallol Paul
We characterize smoothness of an element on the unit sphere of a finite-dimensional polyhedral Banach space. Then we study smoothness of an operator $T \in \mathbb{L}(\ell_…
Some remarks on orthogonality of bounded linear operators
Anubhab Ray, Debmalya Sain, Subhrajit Dey +1
We explore the relation between the orthogonality of bounded linear operators in the space of operators and that of elements in the ground space. To be precise, we study if $ T, A…
On generalized Davis-Wielandt radius inequalities of semi-Hilbertian space operators
Aniket Bhanja, Pintu Bhunia, Kallol Paul
Let be a positive (semidefinite) operator on a complex Hilbert space and let We obtain upper…
Refinements of A-numerical radius inequalities and their applications
Pintu Bhunia, Raj Kumar Nayak, Kallol Paul
We present sharp lower bounds for the A-numerical radius of semi-Hilbertian space operators. We also present an upper bound. Further we compute new upper bounds for the -numeric…
On numerical radius and Crawford number attainment sets of a bounded linear operator
Debmalya Sain, Arpita Mal, Pintu Bhunia +1
We completely characterize the Crawford number attainment set and the numerical radius attainment set of a bounded linear operator on a Hilbert space. We study the intersection pro…