Zero product preserving functionals on \(C(\varOmega )\)-valued spaces of functions Ziba PourghobadiFereshteh SadyMasoumeh Najafi Tavani Original Paper 01 January 2020 Pages: 459 - 472
Generalization of Lax equivalence theorem on unbounded self-adjoint operators with applications to Schrödinger operators Yidong Luo Original Paper 01 January 2020 Pages: 473 - 492
Polynomially normal operators Dragan S. DjordjevićMuneo ChōDijana Mosić Original Paper 04 December 2019 Pages: 493 - 504
On compressions and generalized spectra of operators over \(C^{*}\)-algebras Stefan Ivković Original Paper 04 December 2019 Pages: 505 - 522
On normed spaces with the Wigner Property Ruidong WangDariusz Bugajewski Original Paper Open access 04 December 2019 Pages: 523 - 539
Properties of two unitary operator functions involving idempotents Jiaxin ZhangJiajia NiuYuan Li Original Paper 04 December 2019 Pages: 540 - 554
Inner functions in \(W_{\alpha }\) as improving multipliers Juan DuLiu Yang Original Paper 04 December 2019 Pages: 555 - 566
Weyl’s theorem for paranormal closed operators Neeru BalaG. Ramesh Original Paper 04 December 2019 Pages: 567 - 582
Strongly limited (Dunford–Pettis) completely continuous subspaces of operator ideals Halimeh ArdakaniManijeh SalimiSeyed Mohammad Moshtaghioun Original Paper 04 December 2019 Pages: 583 - 594
Strongly measurable functions and multipliers of \({\mathcal {M}}-\) integrable functions Savita Bhatnagar Original Paper 04 December 2019 Pages: 595 - 603
Almost convergence and Euler totient matrix Serkan DemirizMerve İlkhanEmrah Evren Kara Original Paper 04 December 2019 Pages: 604 - 616
Conditional expectation on non-commutative \(H^{(r,s)}_{p}(\mathcal {A};\ell _{\infty })\) and \(H_{p}(\mathcal {A};\ell _{1})\) spaces: semifinite case D. DauitbekK. Tulenov Original Paper 01 January 2020 Pages: 617 - 625
Spectral properties for some extensions of isometric operators T. Prasad Original Paper 04 December 2019 Pages: 626 - 633
Non-surjective coarse version of the Banach–Stone theorem Igor A. Vestfrid Original Paper 01 January 2020 Pages: 634 - 642
Complex interpolation of vanishing Morrey spaces Denny Ivanal HakimYoshihiro Sawano Original Paper 01 January 2020 Pages: 643 - 661
Maximal Schrödinger operators with complex time Yaoming NiuYing Xue Original Paper 01 January 2020 Pages: 662 - 679
Characterizations of \({*}\) and \({*}\)-left derivable mappings on some algebras Guangyu AnJun HeJiankui Li Original Paper 17 December 2019 Pages: 680 - 692
On symmetry of strong Birkhoff orthogonality in \(B(\mathcal {H},\mathcal {K})\) and \(K(\mathcal {H},\mathcal {K})\) Ryotaro TanakaDebmalya Sain Original Paper Open access 01 January 2020 Pages: 693 - 704
Permanence of weak comparison for large subalgebras Xia ZhaoXiaochun FangQingzhai Fan Original Paper 15 January 2020 Pages: 705 - 717
Singularity preservers on the set of bounded observables Maryam D. NayeriMina JamshidiMehdi Radjabalipour Original Paper 16 January 2020 Pages: 718 - 727
Approximation for link Ismail–May operators Vijay GuptaGunjan Agrawal Original Paper 13 January 2020 Pages: 728 - 747
Inductive limit in the category of TRO Arpit KansalAjay KumarVandana Rajpal Original Paper 31 January 2020 Pages: 748 - 760
A-Statistical \(L_{p}\) approximation properties of an integral variant of a general positive linear operators Carmen MuraruOgün DoğruAslıhan Gülsün Original Paper 31 January 2020 Pages: 761 - 779
Essential spectrum of upper triangular operator matrices Xiufeng WuJunjie Huang Original Paper 05 February 2020 Pages: 780 - 798
Singular dissipative third-order operator and its characteristic function Ekin Uğurlu Original Paper 13 February 2020 Pages: 799 - 814
Inequalities for central moments and spreads of matrices R. SharmaR. KumarPurnima Devi Original Paper 31 January 2020 Pages: 815 - 830
Common best proximity pairs via the concept of complete proximal normal structure Moosa GabelehJack Markin Original Paper 17 February 2020 Pages: 831 - 847
Additive maps preserving r-nilpotent perturbation of scalars on \(B({\mathcal {H}})\) Ting ZhangJinchuan HouXiaofei Qi Original Paper 13 February 2020 Pages: 848 - 865
Inequalities for the Heinz mean of sector matrices involving positive linear maps Chaojun YangFangyan Lu Original Paper 27 April 2020 Pages: 866 - 878
A new approach to numerical radius of quadratic operators Jamal RooinSaeed KaramiMasoomeh Ghaderi Aghideh Original Paper 29 April 2020 Pages: 879 - 896