activity
20102026
most citedNumerical radius inequalities and its applications in estimation of zeros of polynomials

64 citations · 883 across the 94 of their papers we have counts for

collaborators

105 papers

math.FA2026

On the Ball Covering Property of

Ankan Mishra, Kallol Paul, Debmalya Sain +1

We investigate the Ball Covering Property (BCP) of Banach spaces through the lens of Birkhoff-James orthogonality, yielding a new geometric characterization of the property. Applyi…

math.FA2025

On symmetricity of the norm derivatives orthogonality in operator spaces

Souvik Ghosh, Kallol Paul, Debmalya Sain

We investigate -orthogonality and its local symmetry in the space of bounded linear operators. A characterization of Hilbert space operators with symmetric numerical range is es…

math.FA2025

An improvement of the Blanco-Koldobsky-Turnšek characterization of isometries

Jayanta Manna, Kalidas Mandal, Kallol Paul +1

We present an improvement of the Blanco-Koldobsky-Turnšek characterization of isometries in normed linear spaces by using the concept of level vectors of an operator. In this conte…

math.FA2025

On some subspaces of vector-valued continuous function space, from the perspective of Best coapproximation

Souvik Ghosh, Kallol Paul, Debmalya Sain +1

This article explores anti-coproximinal and strongly anti-coproximinal subspaces in the spaces of vector-valued continuous functions and operator spaces. We provide a complete char…

math.FA2025

A study on preservation of parallel pairs and triangle equality attainment pairs

Jayanta Manna, Kalidas Mandal, Kallol Paul +1

This paper investigates the structure and preservation of parallel pairs and triangle equality attainment (TEA) pairs in normed linear spaces. We begin by providing functional char…

math.FA2025

On symmetricity of orthogonality in function spaces and space of operators on Banach spaces

Shamim Sohel, Debmalya Sain, Kallol Paul

We study symmetric points with respect to -orthogonality, -orthogonality and -orthogonality in the space where is a perfectly normal, com…