Edit Profile (opens in new tab) Paul, Kallol Co-Author Distance Author ID: paul.kallol Published as: Paul, Kallol; Paul, K. Homepage: http://www.researchgate.net/profile/Kallol_Paul2 Documents Indexed: 156 Publications since 1998, including 2 Books and 20 Additional arXiv Preprints 1 Contribution as Editor Reviewing Activity: 23 Reviews Co-Authors: 40 Co-Authors with 153 Joint Publications 843 Co-Co-Authors all top 5 Co-Authors 4 single-authored 60 Bhunia, Pintu 60 Sain, Debmalya 27 Mal, Arpita 12 Bag, Santanu 12 Sen, Anirban 10 Ghosh, Souvik 9 Hossein, Sk. Monowar 9 Jana, Suvendu 9 Sohel, Shamim 8 Mandal, Kalidas 7 Ghosh, Puja 6 Bhanja, Aniket 6 Das, Gopal 6 Dey, Subhrajit 6 Nayak, Raj Kumar 6 Ray, Anubhab 5 Das, Kiran Chandra 5 Sen, Jeet 4 Bose, Snehasish 4 Debnath, Lokenath 4 Feki, Kais 3 Barik, Somdatta 3 Karmakar, Shibashis 2 Ghosh Dastidar, S. 2 Guesba, Messaoud 2 Jha, Kanhaiya Jee 2 Moslehian, Mohammad Sal 2 Roy, Saikat 2 Tapdigoglu, Ramiz G. 1 Birbonshi, Riddhick 1 Dastidar, Shyamsree Ghosh 1 Dragomir, Sever Silvestru 1 Garayev, Mübariz Tapdıgoğlu 1 Gurdal, Mehmet 1 Hait, Sourav 1 Kadets’, Volodymyr Mykhaĭlovych 1 Kittaneh, Fuad 1 Manna, Jayanta 1 Sk. M. Hossein, Sk Monowar 1 Wójcik, Paweł all top 5 Serials 14 Linear Algebra and its Applications 13 Journal of Convex Analysis 8 Linear and Multilinear Algebra 7 Advances in Operator Theory 6 Annals of Functional Analysis 5 Mathematica Slovaca 4 Monatshefte für Mathematik 4 International Journal of Mathematical Analysis (Ruse) 4 Operators and Matrices 3 Journal of Mathematical Analysis and Applications 3 Colloquium Mathematicum 3 International Journal of Mathematics and Mathematical Sciences 3 Bulletin of the Iranian Mathematical Society 3 Bulletin des Sciences Mathématiques 3 Novi Sad Journal of Mathematics 2 Rocky Mountain Journal of Mathematics 2 Acta Scientiarum Mathematicarum 2 Results in Mathematics 2 Journal of Operator Theory 2 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 2 Expositiones Mathematicae 2 Advances in Mathematical Sciences and Applications 2 Mathematical Inequalities & Applications 2 Complex Analysis and Operator Theory 2 Banach Journal of Mathematical Analysis 2 International Journal of Applied and Computational Mathematics 2 Infosys Science Foundation Series 1 Indian Journal of Pure & Applied Mathematics 1 Applied Mathematics and Computation 1 Archiv der Mathematik 1 Bulletin of the Calcutta Mathematical Society 1 Collectanea Mathematica 1 Functional Analysis and its Applications 1 Hokkaido Mathematical Journal 1 The Mathematics Student 1 Numerical Functional Analysis and Optimization 1 Rendiconti del Circolo Matemàtico di Palermo. Serie II 1 Aequationes Mathematicae 1 Georgian Mathematical Journal 1 ELA. The Electronic Journal of Linear Algebra 1 Journal of Inequalities and Applications 1 Scientiae Mathematicae 1 Acta Mathematica Sinica. English Series 1 Journal of Nonlinear and Convex Analysis 1 Proceedings of the National Academy of Sciences, India. Section A. Physical Sciences 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Bulletin of the Brazilian Mathematical Society. New Series 1 Journal of Analysis and Applications 1 South East Asian Journal of Mathematics and Mathematical Sciences 1 Fixed Point Theory 1 Miskolc Mathematical Notes 1 International Mathematical Forum 1 Journal of Fixed Point Theory and Applications 1 Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica 1 Afrika Matematika all top 5 Fields 126 Operator theory (47-XX) 75 Functional analysis (46-XX) 29 Linear and multilinear algebra; matrix theory (15-XX) 8 Real functions (26-XX) 8 Convex and discrete geometry (52-XX) 7 Approximations and expansions (41-XX) 3 Harmonic analysis on Euclidean spaces (42-XX) 2 General and overarching topics; collections (00-XX) 2 Functions of a complex variable (30-XX) 2 Manifolds and cell complexes (57-XX) 1 Difference and functional equations (39-XX) 1 Probability theory and stochastic processes (60-XX) 1 Numerical analysis (65-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 110 Publications have been cited 999 times in 319 Documents Cited by ▼ Year ▼ Operator norm attainment and inner product spaces. Zbl 1291.46024 Sain, Debmalya; Paul, Kallol 55 2013 Numerical radius inequalities and its applications in estimation of zeros of polynomials. Zbl 1475.47005 Bhunia, Pintu; Bag, Santanu; Paul, Kallol 45 2019 Birkhoff-James orthogonality and smoothness of bounded linear operators. Zbl 1353.46011 Paul, K.; Sain, D.; Ghosh, P. 35 2016 Lectures on numerical radius inequalities. Zbl 1512.47001 Bhunia, Pintu; Dragomir, Silvestru Sever; Moslehian, Mohammad Sal; Paul, Kallol 35 2022 On inequalities for \(A\)-numerical radius of operators. Zbl 1505.47006 Bhunia, Pintu; Paul, Kallol; Nayak, Raj Kumar 30 2020 \(A\)-numerical radius orthogonality and parallelism of semi-Hilbertian space operators and their applications. Zbl 1521.47065 Bhunia, Pintu; Feki, Kais; Paul, Kallol 30 2021 Operator norm attainment and Birkhoff-James orthogonality. Zbl 1335.46008 Sain, Debmalya; Paul, Kallol; Hait, Sourav 29 2015 New upper bounds for the numerical radius of Hilbert space operators. Zbl 1520.47013 Bhunia, Pintu; Paul, Kallol 29 2021 A complete characterization of Birkhoff-James orthogonality in infinite dimensional normed space. Zbl 1463.46029 Sain, Debmalya; Paul, Kallol; Mal, Arpita 26 2018 On symmetry of Birkhoff-James orthogonality of linear operators. Zbl 1386.46017 Ghosh, Puja; Sain, Debmalya; Paul, Kallol 23 2017 Bounds of numerical radius of bounded linear operators using \(t\)-Aluthge transform. Zbl 07284497 Bag, Santanu; Bhunia, Pintu; Paul, Kallol 23 2020 Development of inequalities and characterization of equality conditions for the numerical radius. Zbl 07403453 Bhunia, Pintu; Paul, Kallol 22 2021 Some improvements of numerical radius inequalities of operators and operator matrices. Zbl 07549478 Bhunia, Pintu; Paul, Kallol 21 2022 Proper improvement of well-known numerical radius inequalities and their applications. Zbl 1483.47014 Bhunia, Pintu; Paul, Kallol 20 2021 On the numerical index of polyhedral Banach spaces. Zbl 1507.47015 Sain, Debmalya; Paul, Kallol; Bhunia, Pintu; Bag, Santanu 19 2019 On symmetry of Birkhoff-James orthogonality of linear operators on finite-dimensional real Banach spaces. Zbl 1465.47014 Sain, Debmalya; Ghosh, Puja; Paul, Kallol 18 2017 On numerical radius of a matrix and estimation of bounds for zeros of a polynomial. Zbl 1253.65056 Paul, Kallol; Bag, Santanu 18 2012 Sharp inequalities for the numerical radius of Hilbert space operators and operator matrices. Zbl 07354296 Bhunia, Pintu; Paul, Kallol; Nayak, Raj Kumar 18 2021 Refinements of \(A\)-numerical radius inequalities and their applications. Zbl 1498.47018 Bhunia, Pintu; Nayak, Raj Kumar; Paul, Kallol 17 2020 Translatable radii of an operator in the direction of another operator. Zbl 0952.47032 Paul, Kallol 17 1999 Orthogonality of bounded linear operators on complex Banach spaces. Zbl 1404.46015 Paul, Kallol; Sain, Debmalya; Mal, Arpita; Mandal, Kalidas 17 2018 Approximate Birkhoff-James orthogonality in the space of bounded linear operators. Zbl 1391.46014 Paul, Kallol; Sain, Debmalya; Mal, Arpita 16 2018 Orthogonality of bounded linear operators. Zbl 1350.46014 Ghosh, Puja; Sain, Debmalya; Paul, Kallol 16 2016 A complete characterization of smoothness in the space of bounded linear operators. Zbl 1464.46015 Sain, Debmalya; Paul, Kallol; Mal, Arpita; Ray, Anubhab 16 2020 On approximate Birkhoff-James orthogonality and normal cones in a normed space. Zbl 1420.46019 Sain, Debmalya; Paul, Kallol; Mal, Arpita 15 2019 Bounds for zeros of a polynomial using numerical radius of Hilbert space operators. Zbl 1520.47012 Bhunia, Pintu; Bag, Santanu; Paul, Kallol 15 2021 Furtherance of numerical radius inequalities of Hilbert space operators. Zbl 07405877 Bhunia, Pintu; Paul, Kallol 13 2021 Bounds for the Davis-Wielandt radius of bounded linear operators. Zbl 1508.47007 Bhunia, Pintu; Bhanja, Aniket; Bag, Santanu; Paul, Kallol 13 2021 On strong orthogonality and strictly convex normed linear spaces. Zbl 1291.46014 Paul, Kallol; Sain, Debmalya; Jha, Kanhaiya 11 2013 Symmetry of Birkhoff-James orthogonality of operators defined between infinite dimensional Banach spaces. Zbl 07006573 Paul, Kallol; Mal, Arpita; Wójcik, Paweł 11 2019 Orthogonality on \(B(H,H)\) and minimal-norm operator. Zbl 1180.47017 Paul, K.; Hossein, S. M.; Das, K. C. 11 2008 Inequalities involving Berezin norm and Berezin number. Zbl 07639062 Bhunia, Pintu; Paul, Kallol; Sen, Anirban 11 2023 Improvement of \(A\)-numerical radius inequalities of semi-Hilbertian space operators. Zbl 07369353 Bhunia, Pintu; Nayak, Raj Kumar; Paul, Kallol 11 2021 Refinements of norm and numerical radius inequalities. Zbl 1525.47013 Bhunia, Pintu; Paul, Kallol 10 2021 On some geometric properties of operator spaces. Zbl 1416.46022 Mal, Arpita; Sain, Debmalya; Paul, Kallol 10 2019 Birkhoff-James orthogonality and numerical radius inequalities of operator matrices. Zbl 07527787 Mal, Arpita; Paul, Kallol; Sen, Jeet 10 2022 Properties of \(J\)-fusion frames in Krein spaces. Zbl 1372.42028 Karmakar, Shibashis; Hossein, Sk. Monowar; Paul, Kallol 9 2017 Orthogonality of operators on \((\mathbb R^n,\| \;\| _\infty)\). Zbl 1299.47018 Paul, Kallol; Sain, Debmalya 9 2013 Numerical radius inequalities of operator matrices with applications. Zbl 1515.47007 Bhunia, Pintu; Bag, Santanu; Paul, Kallol 9 2021 On a new norm on \(\mathcal{B}(\mathcal{H})\) and its applications to numerical radius inequalities. Zbl 07376589 Sain, Debmalya; Bhunia, Pintu; Bhanja, Aniket; Paul, Kallol 9 2021 Approximate Birkhoff-James orthogonality and smoothness in the space of bounded linear operators. Zbl 1436.46015 Mal, Arpita; Paul, Kallol; Rao, T. S. S. R. K.; Sain, Debmalya 9 2019 Characterization of \(k\)-smooth operators between Banach spaces. Zbl 1436.46014 Mal, Arpita; Paul, Kallol 8 2020 Birkhoff-James orthogonality to a subspace of operators defined between Banach spaces. Zbl 1513.46034 Mal, Arpita; Paul, Kallol 8 2021 Symmetric properties of orthogonality of linear operators on \((\mathbb{R}^n, ||\cdot||_1)\). Zbl 1474.47030 Ghosh, Puja; Paul, Kallol; Sain, Debmalya 8 2017 Some remarks on Birkhoff-James orthogonality of linear operators. Zbl 1443.47022 Sain, Debmalya; Mal, Arpita; Paul, Kallol 7 2020 Development of the Berezin number inequalities. Zbl 07739308 Bhunia, Pintu; Sen, Anirban; Paul, Kallol 7 2023 Extreme contractions on finite-dimensional polygonal Banach spaces. Zbl 1428.46011 Sain, Debmalya; Ray, Anubhab; Paul, Kallol 7 2019 On two extremum problems related to the norm of a bounded linear operator. Zbl 07132637 Sain, Debmalya; Paul, Kallol; Mandal, Kalidas 6 2019 Estimation of bounds for the zeros of a polynomial using numerical radius. Zbl 1339.30003 Paul, Kallol; Bag, Santanu 6 2013 Strictly convex space: strong orthogonality and conjugate diameters. Zbl 1344.46012 Sain, Debmalya; Paul, Kallol; Jha, Kanhaiya 6 2016 Positive definite solution of a nonlinear matrix equation. Zbl 1355.15011 Bose, Snehasish; Hossein, Sk. Monowar; Paul, Kallol 6 2016 Berezin number inequalities of operators on reproducing kernel Hilbert spaces. Zbl 07556054 Sen, Anirban; Bhunia, Pintu; Paul, Kallol 6 2022 Characterization of extreme contractions through \(k\)-smoothness of operators. Zbl 1517.46014 Mal, Arpita; Paul, Kallol; Dey, Subhrajit 6 2022 Characterization of \(k\)-smoothness of operators defined between infinite-dimensional spaces. Zbl 1511.46012 Mal, Arpita; Dey, Subhrajit; Paul, Kallol 5 2022 Orthogonality and norm attainment of operators in semi-Hilbertian spaces. Zbl 1520.47043 Sen, Jeet; Sain, Debmalya; Paul, Kallol 5 2021 Farthest point problem and \(M\)-compact sets. Zbl 1392.46019 Sain, Debmalya; Paul, Kallol; Ray, Anubhab 4 2017 Symmetric anti-eigenvalue and symmetric anti-eigenvector. Zbl 1141.47016 Hossein, Sk. M.; Paul, K.; Debnath, L.; Das, K. C. 4 2008 On a new norm on the space of reproducing kernel Hilbert space operators and Berezin radius inequalities. Zbl 1525.47022 Bhunia, P.; Gürdal, M.; Paul, K.; Sen, A.; Tapdigoglu, R. 4 2023 Numerical radius inequalities of \(2\times 2\) operator matrices. Zbl 1530.47006 Bhunia, Pintu; Paul, Kallol 4 2023 Euclidean operator radius inequalities of a pair of bounded linear operators and their applications. Zbl 1519.47006 Jana, Suvendu; Bhunia, Pintu; Paul, Kallol 4 2023 \(k\)-smoothness on polyhedral Banach spaces. Zbl 1501.46015 Dey, Subhrajit; Mal, Arpita; Paul, Kallol 4 2022 Refinement of seminorm and numerical radius inequalities of semi-Hilbertian space operators. Zbl 07571152 Bhunia, Pintu; Nayak, Raj Kumar; Paul, Kallol 4 2022 New inequalities for Davis-Wielandt radius of Hilbert space operators. Zbl 07384686 Bhunia, Pintu; Bhanja, Aniket; Paul, Kallol 4 2021 On extreme contractions between real Banach spaces. Zbl 1478.46013 Sain, Debmalya; Paul, Kallol; Mal, Arpita 4 2021 On positive definite solution of nonlinear matrix equations. Zbl 1388.15013 Hossein, Sk. Monowar; Bose, Snehasish; Paul, Kallol 4 2018 Birkhoff-James orthogonality and its application in the study of geometry of Banach space. Zbl 1430.46010 Paul, Kallol; Sain, Debmalya 4 2019 Solution of a class of nonlinear matrix equations. Zbl 1368.15011 Bose, Snehasish; Sk. M. Hossein, Sk Monowar; Paul, Kallol 3 2017 Characterization of approximate Birkhoff-James orthogonality sets in a Banach space. Zbl 1457.46019 Sen, Jeet; Mal, Arpita; Paul, Kallol 3 2020 Numerical radius inequalities of sectorial matrices. Zbl 07719220 Bhunia, Pintu; Paul, Kallol; Sen, Anirban 3 2023 Some new applications of Berezin symbols. Zbl 07736011 Bhunia, P.; Garayev, M. T.; Paul, K.; Tapdigoglu, R. 3 2023 Chebyshev centers that are not farthest points. Zbl 07811725 Sain, Debmalya; Kadets, Vladimir; Paul, Kallol; Ray, Anubhab 3 2018 On best coapproximations in subspaces of diagonal matrices. Zbl 1523.46010 Sain, Debmalya; Sohel, Shamim; Ghosh, Souvik; Paul, Kallol 3 2023 Anderson’s theorem and \(A\)-spectral radius bounds for semi-Hilbertian space operators. Zbl 1517.47007 Bhunia, Pintu; Kittaneh, Fuad; Paul, Kallol; Sen, Anirban 3 2023 On the Davis-Wielandt shell of an operator and the Davis-Wielandt index of a normed linear space. Zbl 07572718 Bhunia, Pintu; Sain, Debmalya; Paul, Kallol 3 2022 On uniform Bishop-Phelps-Bollobás type approximations of linear operators and preservation of geometric properties. Zbl 1519.46005 Sain, Debmalya; Mal, Arpita; Mandal, Kalidas; Paul, Kallol 3 2021 On generalized Davis-Wielandt radius inequalities of semi-Hilbertian space operators. Zbl 1492.47007 Bhanja, Aniket; Bhunia, Pintu; Paul, Kallol 3 2021 Solution of a pair of nonlinear matrix equations. Zbl 1391.15056 Hossein, Sk Monowar; Bose, Snehasish; Paul, Kallol 3 2018 Some remarks on orthogonality of bounded linear operators. II. Zbl 1538.46019 Sain, Debmalya; Ray, Anubhab; Dey, Subhrajit; Paul, Kallol 2 2022 Numerical radius inequalities and estimation of zeros of polynomials. Zbl 07757053 Bhunia, Pintu; Jana, Suvendu; Paul, Kallol 2 2023 Improved inequalities for numerical radius via Cartesian decomposition. Zbl 1522.47015 Bhunia, P.; Jana, S.; Moslehian, M. S.; Paul, K. 2 2023 Birkhoff-James orthogonality and geometry of operator spaces. Zbl 07802904 Mal, Arpita; Paul, Kallol; Sain, Debmalya 2 2024 Refinement of numerical radius inequalities of complex Hilbert space operators. Zbl 07794403 Bhunia, Pintu; Paul, Kallol 2 2023 Structure of the antieigenvectors of a strictly accretive operator. Zbl 0920.47032 Das, K. C.; Das Gupta, M.; Paul, K. 2 1998 Some remarks on orthogonality of bounded linear operators. Zbl 1487.46019 Ray, Anubhab; Paul, Kallol; Sain, Debmalya; Dey, Subhrajit 2 2022 On the numerical range of operators on some special Banach spaces. Zbl 07523727 Mandal, Kalidas; Bhanja, Aniket; Bag, Santanu; Paul, Kallol 2 2022 Distance formulae and best approximation in the space of compact operators. Zbl 1492.46014 Mal, Arpita; Paul, Kallol 2 2022 Annular bounds for the zeros of a polynomial from companion matrices. Zbl 1491.26012 Bhunia, Pintu; Paul, Kallol 2 2022 New semi-norm of semi-Hilbertian space operators and its application. Zbl 07632130 Bhunia, Pintu; Sen, Anirban; Paul, Kallol 2 2022 \((\varepsilon,A)\)-approximate numerical radius orthogonality and numerical radius derivative. Zbl 1517.46015 Sen, Jeet; Paul, Kallol 2 2023 Generalized \(A\)-numerical radius of operators and related inequalities. Zbl 07648487 Bhunia, Pintu; Feki, Kais; Paul, Kallol 2 2022 On approximate orthogonality and symmetry of operators in semi-Hilbertian structure. Zbl 1479.46016 Sen, Jeet; Sain, Debmalya; Paul, Kallol 2 2021 On numerical radius and Crawford number attainment sets of a bounded linear operator. Zbl 07297374 Sain, Debmalya; Mal, Arpita; Bhunia, Pintu; Paul, Kallol 2 2021 On rectangular constant in normed linear spaces. Zbl 1392.46018 Paul, Kallol; Ghosh, Puja; Sain, Debmalya 2 2017 Characterization of inner product spaces. Zbl 1420.46025 Sain, Debmalya; Paul, Kallol; Debnath, Lokenath 2 2015 A geometric characterization of polygonal Radon planes. Zbl 1440.46013 Mandal, Kalidas; Sain, Debmalya; Paul, Kallol 1 2019 Symmetry of Birkhoff-James orthogonality of bounded linear operators. Zbl 07245317 Paul, Kallol; Sain, Debmalya; Ghosh, Puja 1 2019 Antieigenvectors of the generalized problem and an operator inequality complementary to Schwarz’s inequality. Zbl 1217.47009 Paul, Kallol 1 2008 Symmetric antieigenvalues for normal operators. Zbl 1208.47021 Paul, Kallol; Das, Gopal 1 2010 Bounds for total antieigenvalue of a normal operator. Zbl 1096.47020 Hossein, Sk. M.; Das, K. C.; Debnath, L.; Paul, K. 1 2004 Computation of antieigenvalues of bounded linear operators via centre of mass. Zbl 1342.47027 Paul, Kallol; Das, Gopal; Debnath, Lokenath 1 2015 Birkhoff-James orthogonality and geometry of operator spaces. Zbl 07802904 Mal, Arpita; Paul, Kallol; Sain, Debmalya 2 2024 On the best coapproximation problem in \(\ell_1^n\). Zbl 07790398 Sain, Debmalya; Sohel, Shamim; Ghosh, Souvik; Paul, Kallol 1 2024 Inequalities involving Berezin norm and Berezin number. Zbl 07639062 Bhunia, Pintu; Paul, Kallol; Sen, Anirban 11 2023 Development of the Berezin number inequalities. Zbl 07739308 Bhunia, Pintu; Sen, Anirban; Paul, Kallol 7 2023 On a new norm on the space of reproducing kernel Hilbert space operators and Berezin radius inequalities. Zbl 1525.47022 Bhunia, P.; Gürdal, M.; Paul, K.; Sen, A.; Tapdigoglu, R. 4 2023 Numerical radius inequalities of \(2\times 2\) operator matrices. Zbl 1530.47006 Bhunia, Pintu; Paul, Kallol 4 2023 Euclidean operator radius inequalities of a pair of bounded linear operators and their applications. Zbl 1519.47006 Jana, Suvendu; Bhunia, Pintu; Paul, Kallol 4 2023 Numerical radius inequalities of sectorial matrices. Zbl 07719220 Bhunia, Pintu; Paul, Kallol; Sen, Anirban 3 2023 Some new applications of Berezin symbols. Zbl 07736011 Bhunia, P.; Garayev, M. T.; Paul, K.; Tapdigoglu, R. 3 2023 On best coapproximations in subspaces of diagonal matrices. Zbl 1523.46010 Sain, Debmalya; Sohel, Shamim; Ghosh, Souvik; Paul, Kallol 3 2023 Anderson’s theorem and \(A\)-spectral radius bounds for semi-Hilbertian space operators. Zbl 1517.47007 Bhunia, Pintu; Kittaneh, Fuad; Paul, Kallol; Sen, Anirban 3 2023 Numerical radius inequalities and estimation of zeros of polynomials. Zbl 07757053 Bhunia, Pintu; Jana, Suvendu; Paul, Kallol 2 2023 Improved inequalities for numerical radius via Cartesian decomposition. Zbl 1522.47015 Bhunia, P.; Jana, S.; Moslehian, M. S.; Paul, K. 2 2023 Refinement of numerical radius inequalities of complex Hilbert space operators. Zbl 07794403 Bhunia, Pintu; Paul, Kallol 2 2023 \((\varepsilon,A)\)-approximate numerical radius orthogonality and numerical radius derivative. Zbl 1517.46015 Sen, Jeet; Paul, Kallol 2 2023 On subspaces of \(\ell_\infty\) and extreme contractions in \(\mathbb{L}(\mathbb{X}, \ell_{\infty}^n)\). Zbl 07750836 Sohel, Shamim; Sain, Debmalya; Paul, Kallol 1 2023 On isosceles orthogonality and some geometric constants in a normed space. Zbl 1520.46005 Sain, Debmalya; Ghosh, Souvik; Paul, Kallol 1 2023 On symmetric points with respect to the numerical radius norm. Zbl 1522.47016 Ghosh, Souvik; Mal, Arpita; Paul, Kallol; Sain, Debmalya 1 2023 Geometric properties of operator spaces endowed with the numerical radius norm. Zbl 1514.46013 Dey, Subhrajit; Mal, Arpita; Paul, Kallol 1 2023 Lectures on numerical radius inequalities. Zbl 1512.47001 Bhunia, Pintu; Dragomir, Silvestru Sever; Moslehian, Mohammad Sal; Paul, Kallol 35 2022 Some improvements of numerical radius inequalities of operators and operator matrices. Zbl 07549478 Bhunia, Pintu; Paul, Kallol 21 2022 Birkhoff-James orthogonality and numerical radius inequalities of operator matrices. Zbl 07527787 Mal, Arpita; Paul, Kallol; Sen, Jeet 10 2022 Berezin number inequalities of operators on reproducing kernel Hilbert spaces. Zbl 07556054 Sen, Anirban; Bhunia, Pintu; Paul, Kallol 6 2022 Characterization of extreme contractions through \(k\)-smoothness of operators. Zbl 1517.46014 Mal, Arpita; Paul, Kallol; Dey, Subhrajit 6 2022 Characterization of \(k\)-smoothness of operators defined between infinite-dimensional spaces. Zbl 1511.46012 Mal, Arpita; Dey, Subhrajit; Paul, Kallol 5 2022 \(k\)-smoothness on polyhedral Banach spaces. Zbl 1501.46015 Dey, Subhrajit; Mal, Arpita; Paul, Kallol 4 2022 Refinement of seminorm and numerical radius inequalities of semi-Hilbertian space operators. Zbl 07571152 Bhunia, Pintu; Nayak, Raj Kumar; Paul, Kallol 4 2022 On the Davis-Wielandt shell of an operator and the Davis-Wielandt index of a normed linear space. Zbl 07572718 Bhunia, Pintu; Sain, Debmalya; Paul, Kallol 3 2022 Some remarks on orthogonality of bounded linear operators. II. Zbl 1538.46019 Sain, Debmalya; Ray, Anubhab; Dey, Subhrajit; Paul, Kallol 2 2022 Some remarks on orthogonality of bounded linear operators. Zbl 1487.46019 Ray, Anubhab; Paul, Kallol; Sain, Debmalya; Dey, Subhrajit 2 2022 On the numerical range of operators on some special Banach spaces. Zbl 07523727 Mandal, Kalidas; Bhanja, Aniket; Bag, Santanu; Paul, Kallol 2 2022 Distance formulae and best approximation in the space of compact operators. Zbl 1492.46014 Mal, Arpita; Paul, Kallol 2 2022 Annular bounds for the zeros of a polynomial from companion matrices. Zbl 1491.26012 Bhunia, Pintu; Paul, Kallol 2 2022 New semi-norm of semi-Hilbertian space operators and its application. Zbl 07632130 Bhunia, Pintu; Sen, Anirban; Paul, Kallol 2 2022 Generalized \(A\)-numerical radius of operators and related inequalities. Zbl 07648487 Bhunia, Pintu; Feki, Kais; Paul, Kallol 2 2022 A topological generalization of orthogonality in Banach spaces and some applications. Zbl 1530.46003 Sain, Debmalya; Roy, Saikat; Paul, Kallol 1 2022 \(A\)-numerical radius orthogonality and parallelism of semi-Hilbertian space operators and their applications. Zbl 1521.47065 Bhunia, Pintu; Feki, Kais; Paul, Kallol 30 2021 New upper bounds for the numerical radius of Hilbert space operators. Zbl 1520.47013 Bhunia, Pintu; Paul, Kallol 29 2021 Development of inequalities and characterization of equality conditions for the numerical radius. Zbl 07403453 Bhunia, Pintu; Paul, Kallol 22 2021 Proper improvement of well-known numerical radius inequalities and their applications. Zbl 1483.47014 Bhunia, Pintu; Paul, Kallol 20 2021 Sharp inequalities for the numerical radius of Hilbert space operators and operator matrices. Zbl 07354296 Bhunia, Pintu; Paul, Kallol; Nayak, Raj Kumar 18 2021 Bounds for zeros of a polynomial using numerical radius of Hilbert space operators. Zbl 1520.47012 Bhunia, Pintu; Bag, Santanu; Paul, Kallol 15 2021 Furtherance of numerical radius inequalities of Hilbert space operators. Zbl 07405877 Bhunia, Pintu; Paul, Kallol 13 2021 Bounds for the Davis-Wielandt radius of bounded linear operators. Zbl 1508.47007 Bhunia, Pintu; Bhanja, Aniket; Bag, Santanu; Paul, Kallol 13 2021 Improvement of \(A\)-numerical radius inequalities of semi-Hilbertian space operators. Zbl 07369353 Bhunia, Pintu; Nayak, Raj Kumar; Paul, Kallol 11 2021 Refinements of norm and numerical radius inequalities. Zbl 1525.47013 Bhunia, Pintu; Paul, Kallol 10 2021 Numerical radius inequalities of operator matrices with applications. Zbl 1515.47007 Bhunia, Pintu; Bag, Santanu; Paul, Kallol 9 2021 On a new norm on \(\mathcal{B}(\mathcal{H})\) and its applications to numerical radius inequalities. Zbl 07376589 Sain, Debmalya; Bhunia, Pintu; Bhanja, Aniket; Paul, Kallol 9 2021 Birkhoff-James orthogonality to a subspace of operators defined between Banach spaces. Zbl 1513.46034 Mal, Arpita; Paul, Kallol 8 2021 Orthogonality and norm attainment of operators in semi-Hilbertian spaces. Zbl 1520.47043 Sen, Jeet; Sain, Debmalya; Paul, Kallol 5 2021 New inequalities for Davis-Wielandt radius of Hilbert space operators. Zbl 07384686 Bhunia, Pintu; Bhanja, Aniket; Paul, Kallol 4 2021 On extreme contractions between real Banach spaces. Zbl 1478.46013 Sain, Debmalya; Paul, Kallol; Mal, Arpita 4 2021 On uniform Bishop-Phelps-Bollobás type approximations of linear operators and preservation of geometric properties. Zbl 1519.46005 Sain, Debmalya; Mal, Arpita; Mandal, Kalidas; Paul, Kallol 3 2021 On generalized Davis-Wielandt radius inequalities of semi-Hilbertian space operators. Zbl 1492.47007 Bhanja, Aniket; Bhunia, Pintu; Paul, Kallol 3 2021 On approximate orthogonality and symmetry of operators in semi-Hilbertian structure. Zbl 1479.46016 Sen, Jeet; Sain, Debmalya; Paul, Kallol 2 2021 On numerical radius and Crawford number attainment sets of a bounded linear operator. Zbl 07297374 Sain, Debmalya; Mal, Arpita; Bhunia, Pintu; Paul, Kallol 2 2021 Correction to: “\(A\)-numerical radius orthogonality and parallelism of semi-Hilbertian space operators and their applications”. Zbl 1521.47066 Bhunia, Pintu; Feki, Kais; Paul, Kallol 1 2021 On inequalities for \(A\)-numerical radius of operators. Zbl 1505.47006 Bhunia, Pintu; Paul, Kallol; Nayak, Raj Kumar 30 2020 Bounds of numerical radius of bounded linear operators using \(t\)-Aluthge transform. Zbl 07284497 Bag, Santanu; Bhunia, Pintu; Paul, Kallol 23 2020 Refinements of \(A\)-numerical radius inequalities and their applications. Zbl 1498.47018 Bhunia, Pintu; Nayak, Raj Kumar; Paul, Kallol 17 2020 A complete characterization of smoothness in the space of bounded linear operators. Zbl 1464.46015 Sain, Debmalya; Paul, Kallol; Mal, Arpita; Ray, Anubhab 16 2020 Characterization of \(k\)-smooth operators between Banach spaces. Zbl 1436.46014 Mal, Arpita; Paul, Kallol 8 2020 Some remarks on Birkhoff-James orthogonality of linear operators. Zbl 1443.47022 Sain, Debmalya; Mal, Arpita; Paul, Kallol 7 2020 Characterization of approximate Birkhoff-James orthogonality sets in a Banach space. Zbl 1457.46019 Sen, Jeet; Mal, Arpita; Paul, Kallol 3 2020 Numerical radius inequalities and its applications in estimation of zeros of polynomials. Zbl 1475.47005 Bhunia, Pintu; Bag, Santanu; Paul, Kallol 45 2019 On the numerical index of polyhedral Banach spaces. Zbl 1507.47015 Sain, Debmalya; Paul, Kallol; Bhunia, Pintu; Bag, Santanu 19 2019 On approximate Birkhoff-James orthogonality and normal cones in a normed space. Zbl 1420.46019 Sain, Debmalya; Paul, Kallol; Mal, Arpita 15 2019 Symmetry of Birkhoff-James orthogonality of operators defined between infinite dimensional Banach spaces. Zbl 07006573 Paul, Kallol; Mal, Arpita; Wójcik, Paweł 11 2019 On some geometric properties of operator spaces. Zbl 1416.46022 Mal, Arpita; Sain, Debmalya; Paul, Kallol 10 2019 Approximate Birkhoff-James orthogonality and smoothness in the space of bounded linear operators. Zbl 1436.46015 Mal, Arpita; Paul, Kallol; Rao, T. S. S. R. K.; Sain, Debmalya 9 2019 Extreme contractions on finite-dimensional polygonal Banach spaces. Zbl 1428.46011 Sain, Debmalya; Ray, Anubhab; Paul, Kallol 7 2019 On two extremum problems related to the norm of a bounded linear operator. Zbl 07132637 Sain, Debmalya; Paul, Kallol; Mandal, Kalidas 6 2019 Birkhoff-James orthogonality and its application in the study of geometry of Banach space. Zbl 1430.46010 Paul, Kallol; Sain, Debmalya 4 2019 A geometric characterization of polygonal Radon planes. Zbl 1440.46013 Mandal, Kalidas; Sain, Debmalya; Paul, Kallol 1 2019 Symmetry of Birkhoff-James orthogonality of bounded linear operators. Zbl 07245317 Paul, Kallol; Sain, Debmalya; Ghosh, Puja 1 2019 A complete characterization of Birkhoff-James orthogonality in infinite dimensional normed space. Zbl 1463.46029 Sain, Debmalya; Paul, Kallol; Mal, Arpita 26 2018 Orthogonality of bounded linear operators on complex Banach spaces. Zbl 1404.46015 Paul, Kallol; Sain, Debmalya; Mal, Arpita; Mandal, Kalidas 17 2018 Approximate Birkhoff-James orthogonality in the space of bounded linear operators. Zbl 1391.46014 Paul, Kallol; Sain, Debmalya; Mal, Arpita 16 2018 On positive definite solution of nonlinear matrix equations. Zbl 1388.15013 Hossein, Sk. Monowar; Bose, Snehasish; Paul, Kallol 4 2018 Chebyshev centers that are not farthest points. Zbl 07811725 Sain, Debmalya; Kadets, Vladimir; Paul, Kallol; Ray, Anubhab 3 2018 Solution of a pair of nonlinear matrix equations. Zbl 1391.15056 Hossein, Sk Monowar; Bose, Snehasish; Paul, Kallol 3 2018 On symmetry of Birkhoff-James orthogonality of linear operators. Zbl 1386.46017 Ghosh, Puja; Sain, Debmalya; Paul, Kallol 23 2017 On symmetry of Birkhoff-James orthogonality of linear operators on finite-dimensional real Banach spaces. Zbl 1465.47014 Sain, Debmalya; Ghosh, Puja; Paul, Kallol 18 2017 Properties of \(J\)-fusion frames in Krein spaces. Zbl 1372.42028 Karmakar, Shibashis; Hossein, Sk. Monowar; Paul, Kallol 9 2017 Symmetric properties of orthogonality of linear operators on \((\mathbb{R}^n, ||\cdot||_1)\). Zbl 1474.47030 Ghosh, Puja; Paul, Kallol; Sain, Debmalya 8 2017 Farthest point problem and \(M\)-compact sets. Zbl 1392.46019 Sain, Debmalya; Paul, Kallol; Ray, Anubhab 4 2017 Solution of a class of nonlinear matrix equations. Zbl 1368.15011 Bose, Snehasish; Sk. M. Hossein, Sk Monowar; Paul, Kallol 3 2017 On rectangular constant in normed linear spaces. Zbl 1392.46018 Paul, Kallol; Ghosh, Puja; Sain, Debmalya 2 2017 Birkhoff-James orthogonality and smoothness of bounded linear operators. Zbl 1353.46011 Paul, K.; Sain, D.; Ghosh, P. 35 2016 Orthogonality of bounded linear operators. Zbl 1350.46014 Ghosh, Puja; Sain, Debmalya; Paul, Kallol 16 2016 Strictly convex space: strong orthogonality and conjugate diameters. Zbl 1344.46012 Sain, Debmalya; Paul, Kallol; Jha, Kanhaiya 6 2016 Positive definite solution of a nonlinear matrix equation. Zbl 1355.15011 Bose, Snehasish; Hossein, Sk. Monowar; Paul, Kallol 6 2016 Operator norm attainment and Birkhoff-James orthogonality. Zbl 1335.46008 Sain, Debmalya; Paul, Kallol; Hait, Sourav 29 2015 Characterization of inner product spaces. Zbl 1420.46025 Sain, Debmalya; Paul, Kallol; Debnath, Lokenath 2 2015 Computation of antieigenvalues of bounded linear operators via centre of mass. Zbl 1342.47027 Paul, Kallol; Das, Gopal; Debnath, Lokenath 1 2015 Operator norm attainment and inner product spaces. Zbl 1291.46024 Sain, Debmalya; Paul, Kallol 55 2013 On strong orthogonality and strictly convex normed linear spaces. Zbl 1291.46014 Paul, Kallol; Sain, Debmalya; Jha, Kanhaiya 11 2013 Orthogonality of operators on \((\mathbb R^n,\| \;\| _\infty)\). Zbl 1299.47018 Paul, Kallol; Sain, Debmalya 9 2013 Estimation of bounds for the zeros of a polynomial using numerical radius. Zbl 1339.30003 Paul, Kallol; Bag, Santanu 6 2013 On numerical radius of a matrix and estimation of bounds for zeros of a polynomial. Zbl 1253.65056 Paul, Kallol; Bag, Santanu 18 2012 ...and 10 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 248 Authors 91 Paul, Kallol 61 Sain, Debmalya 51 Bhunia, Pintu 24 Kittaneh, Fuad 24 Mal, Arpita 18 Feki, Kais 15 Roy, Saikat 11 Wójcik, Paweł 10 Conde, Cristian M. 10 Sen, Anirban 9 Zamani, Ali 8 Moslehian, Mohammad Sal 8 Nayak, Raj Kumar 8 Sababheh, Mohamad Suboh 8 Tanaka, Ryotaro 7 Guesba, Messaoud 7 Moradi, Hamid Reza 6 Amyari, Maryam 6 Bag, Santanu 6 Chmieliński, Jacek 6 Dey, Subhrajit 6 Frakis, Abdelkader 6 Garayev, Mübariz Tapdıgoğlu 6 Sohel, Shamim 5 Arambašić, Ljiljana 5 Bottazzi, Tamara 5 Ghosh, Souvik 5 Grover, Priyanka 5 Jana, Suvendu 5 Kim, Sun Kwang 5 Mandal, Kalidas 5 Sahoo, Satyajit 5 Sen, Jeet 5 Singla, Sushil 4 Bhanja, Aniket 4 Ghosh, Puja 4 Guterman, Alexander Èmilevich 4 Hossein, Sk. Monowar 4 Khurana, Divya 4 Kuzma, Bojan 4 Nashine, Hemant Kumar 4 Rajić, Rajna 4 Tapdigoglu, Ramiz G. 4 Wu, Deyu 4 Zhilina, Svetlana 3 Alimov, Alexey R. 3 Altwaijry, Najla A. 3 Bagchi, Satya 3 Bakherad, Mojtaba 3 Balestro, Vitor 3 Bose, Snehasish 3 Chakraborty, Uday Shankar 3 Choi, Geunsu 3 Debnath, Lokenath 3 Dey, Lakshmi Kanta 3 Gurdal, Mehmet 3 Komuro, Naoto 3 Martini, Horst 3 Merí, Javier 3 Mirmostafaee, Alireza Kamel 3 Mishra, Debasisha 3 Quero, Alicia 3 Ray, Anubhab 3 Rout, Nirmal Chandra 3 Saito, Kichisuke 3 Seddighin, Morteza 3 Soltani, Soumia 3 Som, Sumit 2 Abu-Omar, Amer 2 Akram, Muhammad Saeed 2 Alomari, Mohammad Wajeeh 2 Ammar, Aicha 2 Başaran, Hamdullah 2 Bose, Babhrubahan 2 Chen, Alatancang 2 Dehghani, Mahdi 2 Dong, Xiaomei 2 Garai, Hiranmoy 2 Gohari, Mahdi Mohammadi 2 Hai, Guojun 2 Hyder, Javariya 2 Janfada, Mohammad 2 Kadelburg, Zoran 2 Lee, Han Ju 2 Martín Suarez, Miguel 2 Minculete, Nicusor 2 Moghaddam, Sadaf Fakhri 2 Pakhira, Samik 2 Qiao, HongWei 2 Senapati, Tanusri 2 Sid Ahmed, Ould Ahmed Mahmoud 2 Torabian, Mahdi 2 Xu, Qingxiang 1 Abed, Mohammed Y. 1 Abtahi, Mortaza 1 Abu Sammour, Samah 1 Acosta Vigil, María Dolores 1 Ahmadi, Reza H. 1 Aici, Soumia 1 Akter, Dilruba ...and 148 more Authors all top 5 Cited in 88 Serials 34 Linear Algebra and its Applications 32 Linear and Multilinear Algebra 20 Annals of Functional Analysis 16 Journal of Mathematical Analysis and Applications 15 Banach Journal of Mathematical Analysis 13 Advances in Operator Theory 11 Operators and Matrices 10 Journal of Convex Analysis 7 Mediterranean Journal of Mathematics 6 Numerical Functional Analysis and Optimization 6 Aequationes Mathematicae 5 Results in Mathematics 5 Bulletin of the Iranian Mathematical Society 5 Bulletin des Sciences Mathématiques 5 Mathematical Inequalities & Applications 4 Acta Scientiarum Mathematicarum 4 Monatshefte für Mathematik 4 Journal of Mathematical Inequalities 3 Bulletin of the Australian Mathematical Society 3 Rocky Mountain Journal of Mathematics 3 Mathematica Slovaca 3 Quaestiones Mathematicae 3 Rendiconti del Circolo Matemàtico di Palermo. Serie II 3 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 3 Turkish Journal of Mathematics 3 Boletín de la Sociedad Matemática Mexicana. Third Series 3 Journal of Fixed Point Theory and Applications 3 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 3 Afrika Matematika 2 Indian Journal of Pure & Applied Mathematics 2 Archiv der Mathematik 2 Colloquium Mathematicum 2 Journal of Computational and Applied Mathematics 2 Expositiones Mathematicae 2 Indagationes Mathematicae. New Series 2 The Journal of Analysis 2 Georgian Mathematical Journal 2 Filomat 2 Lobachevskii Journal of Mathematics 2 Journal of the Australian Mathematical Society 2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Complex Analysis and Operator Theory 2 Journal of Function Spaces 2 International Journal of Applied and Computational Mathematics 2 Bollettino dell’Unione Matematica Italiana 1 Russian Mathematical Surveys 1 Applied Mathematics and Computation 1 Collectanea Mathematica 1 Czechoslovak Mathematical Journal 1 Demonstratio Mathematica 1 Functional Analysis and its Applications 1 Hokkaido Mathematical Journal 1 International Journal of Mathematics and Mathematical Sciences 1 Journal of the Korean Mathematical Society 1 Kyungpook Mathematical Journal 1 Proceedings of the American Mathematical Society 1 Ricerche di Matematica 1 Acta Applicandae Mathematicae 1 Facta Universitatis. Series Mathematics and Informatics 1 Journal of the Ramanujan Mathematical Society 1 Mathematica Bohemica 1 Glasnik Matematički. Serija III 1 Journal of Mathematical Sciences (New York) 1 Bulletin of the Belgian Mathematical Society - Simon Stevin 1 Computational and Applied Mathematics 1 ELA. The Electronic Journal of Linear Algebra 1 Taiwanese Journal of Mathematics 1 Novi Sad Journal of Mathematics 1 Journal of Inequalities and Applications 1 Revista Matemática Complutense 1 Acta Mathematica Sinica. English Series 1 Nonlinear Functional Analysis and Applications 1 Kragujevac Journal of Mathematics 1 Applied Mathematics E-Notes 1 Journal of Applied Mathematics and Computing 1 Bulletin of the Brazilian Mathematical Society. New Series 1 Hacettepe Journal of Mathematics and Statistics 1 International Journal of Wavelets, Multiresolution and Information Processing 1 Journal of the Indonesian Mathematical Society 1 Annali dell’Università di Ferrara. Sezione VII. Scienze Matematiche 1 Applications and Applied Mathematics 1 Tbilisi Mathematical Journal 1 Bulletin of Mathematical Analysis and Applications 1 Journal of Pseudo-Differential Operators and Applications 1 Caspian Journal of Mathematical Sciences 1 Special Matrices 1 Open Mathematics 1 Baku Mathematical Journal all top 5 Cited in 21 Fields 244 Operator theory (47-XX) 165 Functional analysis (46-XX) 55 Linear and multilinear algebra; matrix theory (15-XX) 19 Approximations and expansions (41-XX) 14 Convex and discrete geometry (52-XX) 13 Real functions (26-XX) 7 Geometry (51-XX) 6 General topology (54-XX) 5 Functions of a complex variable (30-XX) 4 Difference and functional equations (39-XX) 4 Harmonic analysis on Euclidean spaces (42-XX) 2 Integral equations (45-XX) 2 Differential geometry (53-XX) 2 Global analysis, analysis on manifolds (58-XX) 2 Numerical analysis (65-XX) 1 History and biography (01-XX) 1 Combinatorics (05-XX) 1 Ordinary differential equations (34-XX) 1 Sequences, series, summability (40-XX) 1 Manifolds and cell complexes (57-XX) 1 Operations research, mathematical programming (90-XX) Citations by Year