Operators and Matrices Volume 18, Issue 1

Hang Zhou

Hyponormality of specific unbounded product of densely defined composition operators in L² spaces

18-01 Pages 1-22

Abstract Article

Yuqiu Sheng, Wende Liu, Xingxue Miao

Lie superalgebras based on 𝔰𝔩(2,𝔽)

18-02 Pages 23-36

Abstract Article

Johanns de Andrade Bezerra

Remarks on the product of two projections

18-03 Pages 37-52

Abstract Article

Jian-Zhong Xiao, Feng-Qin Zhu

The Aleksandrov problem and the Tingley problem for expansive and nonexpansive operators in p-normed spaces

18-04 Pages 53-67

Abstract Article

Saeedatossadat Nourbakhsh, Mahmoud Hassani, Mohsen Erfanian Omidvar, Hamid Reza Moradi

Inner product inequalities through Cartesian decomposition with applications to numerical radius inequalities

18-05 Pages 69-81

Abstract Article

Messaoud Guesba, Pintu Bhunia, Kallol Paul

Berezin number inequalities via positivity of 2 × 2 block matrices

18-06 Pages 83-95

Abstract Article

R. Balaji, Vinayak Gupta

On distance Laplacian matrices of weighted trees

18-07 Pages 97-114

Abstract Article

Zuowei Zhang, Xia Zhao

The inheritance of m-comparison from the containing C*-algebra to a large subalgebra

18-08 Pages 115-127

Abstract Article

Messaoud Guesba, Mohammad Sababheh

On the Berezin number of operator matrices

18-09 Pages 129-146

Abstract Article

Anuradha Gupta, Amita Aggarwal

Hyponormality of the sum of Toeplitz operators with non-harmonic symbol on the Fock space

18-10 Pages 147-162

Abstract Article

Wenhua Qian, Dandan Xiao, Tanghong Tao, Wenming Wu, Xin Yi

Joint spectrum shrinking maps on projections

18-11 Pages 163-172

Abstract Article

Huanyin Chen, Marjan Sheibani Abdolyousefi

Generalized core inverse in Banach ∗-algebras

18-12 Pages 173-189

Abstract Article

Albrecht Seelmann

Relative residual bounds for eigenvalues in gaps of the essential spectrum

18-13 Pages 191-203

Abstract Article

Debendra P. Banjade, Amy Chambers, Menassie Ephrem

On singularities of labeled graph C^*-algebras

18-14 Pages 205-234

Abstract Article

Vali M. Kurbanov, Elchin J. Ibadov

On the properties of the systems of root vector functions of Dirac-type operator with summable potential

18-15 Pages 235-256

Abstract Article

Mohammad Sababheh, Ibrahim Halil Gümüş, Hamid Reza Moradi

Further properties of PPT and (α,β)-normal matrices

18-16 Pages 257-271

Abstract Article