A quantitative version of the Kolmogorov–Riesz theorem G. García Original Paper 30 November 2020 Article: 25
Resolvent algebra of finite rank operators R. EskandariF. Mirzapour Original Paper 24 November 2020 Article: 24
On the irreducibility of induced representations of some groupoid \(C^*\)-algebras Ibrahima Toure Original Paper 23 November 2020 Article: 23
Shift-invariant system on the Heisenberg Group S. R. DasR. Radha Original Paper 23 November 2020 Article: 21
Asymptotic behavior result for obstacle parabolic problems with measure data M. Abdellaoui Original Paper 19 November 2020 Article: 20
\(({P},\;m)\)-B-normal and quasi-P-B-normal operators in semi-Hilbert spaces Naeem Ahmad Original Paper 19 November 2020 Article: 19
The n-th residual relative operator entropy \({\mathfrak {R}}^{[n]}_{x,y}(A|B)\) Hiroaki TohyamaEizaburo KameiMasayuki Watanabe Original Paper 19 November 2020 Article: 18
The interplay between two Euler–Lagrange operators relating to the nonlinear elliptic system \(\Sigma [(u, {\mathscr {P}}), \varOmega ]\) George MorrisonAli Taheri Original Paper Open access 19 November 2020 Article: 17
Co-actions, Isometries, and isomorphism classes of Hilbert modules Dan Z. Kučerovský Original Paper Open access 19 November 2020 Article: 16
Estimates of the best approximations of the functions of the Nikol’skii–Besov class in the generalized space of Lorentz G. Akishev Original Paper 28 October 2020 Article: 15
Some generalizations for singular value inequalities of compact operators Wasim Audeh Original Paper 19 October 2020 Article: 14
Spectral hypersurfaces for operator pairs and Hadamard matrices of F type Thomas PeeblesMichael Stessin Original Paper 19 October 2020 Article: 13
Differential calculus on the space of countable labelled graphs Apoorva KhareBala Rajaratnam Original Paper 19 October 2020 Article: 12
A common solution of split equality monotone inclusion problem and split equality fixed point problem in real Banach spaces Chinedu IzuchukwuFerdinard Udochukwu OgbuisiOluwatosin Temitope Mewomo Original Paper 16 October 2020 Article: 11
Existence and location of solutions to fourth-order Lidstone coupled systems with dependence on odd derivatives Robert de SousaFeliz Minhós Original Paper 16 October 2020 Article: 10
The Fuglede theorem and some intertwining relations Ikram Fatima Zohra BensaidSouheyb DehimiMohammed Hichem Mortad Original Paper 16 October 2020 Article: 9
On submajorization inequalities for matrices of measurable operators Sawlet JunisAzhar Oshanova Original Paper 16 October 2020 Article: 8
Properties of some \(\psi\)-Hilfer fractional Fredholm-type integro-differential equations Deepak B. Pachpatte Original Paper 15 October 2020 Article: 7
Generalized numerical radius inequalities of operators in Hilbert spaces Kais Feki Original Paper 15 October 2020 Article: 6
Conditional expectation of Pettis integrable random sets: existence and convergence theorems M. El AllaliF. Ezzaki Original Paper 15 October 2020 Article: 5
Systems of two subspaces in a Hilbert space Masatoshi EnomotoYasuo Watatani Original Paper 07 October 2020 Article: 4
On the spectra of products and linear combinations of idempotents Mohamed BarraaEl Hassan BenabdiMohamed Boumazgour Original Paper 07 October 2020 Article: 3
Generalizations of the unitarily invariant norm version of the arithmetic–geometric mean inequality Mohammad Al-khlylehFadi Alrimawi Original Paper 07 October 2020 Article: 2
Some upper bounds for the \(\mathbb {A}\)-numerical radius of \(2\times 2\) block matrices Qingxiang XuZhongming YeAli Zamani Original Paper 07 October 2020 Article: 1