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numerical range

51 articles

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Article Title Journal Published
OaM-18-25 Multiplicatively numerical range-preserving maps
Hamid Nkhaylia
Operators and Matrices Volume 18, Issue 2
06/2024
OaM-18-20 On Ando-Hiai type inequalities for sectorial matrices
Yanling Mao, Guoxing Ji
Operators and Matrices Volume 18, Issue 2
06/2024
OaM-17-63 Spectral inclusion property for a class of block operator matrices
Yaru Qi, Wenwen Qiu, Carsten Trunk, Mitsuru Wilson
Operators and Matrices Volume 17, Issue 4
12/2023
OaM-17-14 Numerical ranges of some Foguel operators
Muyan Jiang, Ilya M. Spitkovsky
Operators and Matrices Volume 17, Issue 1
03/2023
JMI-16-92 Numerical ranges of sum of two weighted composition operators on the Hardy space H2
Mahmood Haji Shaabani, Narjes Vafaei
Journal of Mathematical Inequalities Volume 16, Issue 4
12/2022
OaM-16-26 Generalizing the Ando-Hiai inequality for sectorial matrices
Lin Zhao, Yanpeng Zheng, Xiaoyu Jiang
Operators and Matrices Volume 16, Issue 2
06/2022
OaM-16-24 Determinantal polynomials of a weighted shift matrix with palindromic geometric weights
Undrakh Batzorig
Operators and Matrices Volume 16, Issue 2
06/2022
OaM-15-93 Maximal numerical range and quadratic elements in a C✻-algebra
E. H. Benabdi, M. Barraa, M. K. Chraibi, A. Baghdad
Operators and Matrices Volume 15, Issue 4
12/2021
JMI-15-97 On a reverse of the Tan-Xie inequality for sector matrices and its applications
Leila Nasiri, Shigeru Furuichi
Journal of Mathematical Inequalities Volume 15, Issue 4
12/2021
MIA-24-71 Numerical radius in Hilbert C✻
Ali Zamani
Mathematical Inequalities & Applications Volume 24, Issue 4
10/2021
OaM-15-26 Numerical ranges encircled by analytic curves
Brian Lins
Operators and Matrices Volume 15, Issue 1
03/2021
OaM-14-62 Topological properties of the block numerical range of operator matrices
Agnes Radl, Manfred P. H. Wolff
Operators and Matrices Volume 14, Issue 4
12/2020
OaM-14-18 On the numerical range and operator norm of V2
L. Khadkhuu, D. Tsedenbayar
Operators and Matrices Volume 14, Issue 1
03/2020
OaM-14-07 Operators with minimal pseudospectra and connections to normality
Samir Raouafi
Operators and Matrices Volume 14, Issue 1
03/2020
OaM-14-06 Inverse continuity of the numerical range map for Hilbert space operators
Brian Lins, Ilya M. Spitkovsky
Operators and Matrices Volume 14, Issue 1
03/2020
OaM-13-77 On the maximal numerical range of a hyponormal operator
Abderrahim Baghdad, Mohamed Chraibi Kaadoud
Operators and Matrices Volume 13, Issue 4
12/2019
OaM-13-72 Constant norms and numerical radii of matrix powers
Hwa-Long Gau, Kuo-Zhong Wang, Pei Yuan Wu
Operators and Matrices Volume 13, Issue 4
12/2019
OaM-13-45 A note on the maximal numerical range
Ilya M. Spitkovsky
Operators and Matrices Volume 13, Issue 3
09/2019
MIA-21-75 An extension of Hartfiel's determinant inequality
Lei Hou, Sheng Dong
Mathematical Inequalities & Applications Volume 21, Issue 4
10/2018
OaM-12-16 Scalar approximants of quadratic operators with applications
Amer Abu-Omar, Pei Yuan Wu
Operators and Matrices Volume 12, Issue 1
03/2018
OaM-12-15 On the block numerical range of operators on arbitrary Banach spaces
Agnes Radl, Manfred P. H. Wolff
Operators and Matrices Volume 12, Issue 1
03/2018
JMI-12-19 Maximal numerical range of a compact set and applications to some Dragomir's inequalities
Abderrahim Baghdad, Mohamed Chraibi Kaadoud
Journal of Mathematical Inequalities Volume 12, Issue 1
03/2018
OaM-11-69 Lower bounds for the numerical radius
Hwa-Long Gau, Pei Yuan Wu
Operators and Matrices Volume 11, Issue 4
12/2017
OaM-11-62 An observation about normaloid operators
Jor-Ting Chan, Kong Chan
Operators and Matrices Volume 11, Issue 3
09/2017
OaM-11-51 Spectral sets for numerical range
Hubert Klaja, Javad Mashreghi, Thomas Ransford
Operators and Matrices Volume 11, Issue 3
09/2017