Works matching DE "SELFADJOINT operators"

Results: 819

Callebaut and Hölder type inequalities for positive linear maps of selfadjoint operators via a Kittaneh-Manasrah result.

Published in:

Journal of Linear & Topological Algebra, 2025, v. 14, n. 1, p. 1, doi. 10.71483/JLTA.2025.1205750

By:

Dragomir, S. S.

Publication type:

Article

FIRST ORDER OPTIMALITY CONDITIONS FOR NONSMOOTH QUADRATIC PROBLEMS IN BANACH SPACES.

Published in:

Journal of Nonlinear & Variational Analysis, 2025, v. 9, n. 5, p. 685, doi. 10.23952/jnva.9.2025.5.03

By:

ABBASI, MALEK;
AHADIZADEH, AKRAM;
REZAEI, MAHBOUBEH;
ZAFARANI, JAFAR

Publication type:

Article

ON THE SPECTRUM OF SINGULAR q-STURM-LIOUVILLE OPERATORS ON THE WHOLE AXIS.

Published in:

Publications de l'Institut Mathématique, 2025, v. 117, n. 131, p. 105, doi. 10.2298/PIM2531105A

By:

Allahverdiev, Bilender P.;
Tuna, Hüseyin

Publication type:

Article

Absolute dilations of UCP self-adjoint Fourier multipliers: the nonunimodular case.

Published in:

Glasgow Mathematical Journal, 2025, v. 67, n. 3, p. 307, doi. 10.1017/S0017089525000023

By:

Duquet, Charles;
Le Merdy, Christian

Publication type:

Article

Location of zeros of non-trivial positive supersolutions to Schrödinger equations.

Published in:

Mathematische Annalen, 2025, v. 392, n. 3, p. 3851, doi. 10.1007/s00208-025-03176-9

By:

Klimsiak, Tomasz

Publication type:

Article

TENSORIAL NORM INEQUALITIES FOR TAYLOR'S EXPANSIONS OF FUNCTIONS OF SELFADJOINT OPERATORS IN HILBERT SPACES.

Published in:

Journal of Mathematical Inequalities, 2025, v. 19, n. 1, p. 1, doi. 10.7153/jmi-2025-19-01

By:

DRAGOMIR, SILVESTRU SEVER;
GARAYEV, MUBARIZ TAPDIGOGLU

Publication type:

Article

Partial isometries between Hilbert modules and their compositions.

Published in:

Infinite Dimensional Analysis, Quantum Probability & Related Topics, 2025, v. 28, n. 2, p. 1, doi. 10.1142/S0219025724400101

By:

Skeide, Michael

Publication type:

Article

Classification of irreversible and reversible Pimsner operator algebras.

Published in:

Compositio Mathematica, 2020, v. 156, n. 12, p. 2510, doi. 10.1112/S0010437X2000754X

By:

Dor-On, Adam;
Eilers, Søren;
Geffen, Shirly

Publication type:

Article

Spectral Analysis of Some Graphs with Infinite Rays.

Published in:

Ukrainian Mathematical Journal, 2015, v. 66, n. 9, p. 1333, doi. 10.1007/s11253-015-1013-4

By:

Lebid', V.;
Nyzhnyk, L.

Publication type:

Article

On the theory of $ \mathcal{P}\mathcal{T} $-symmetric operators.

Published in:

Ukrainian Mathematical Journal, 2012, v. 64, n. 1, p. 35, doi. 10.1007/s11253-012-0628-y

By:

Kuzhel', S.;
Patsyuk, O.

Publication type:

Article

Submanifolds of compact operators with fixed multiplicities of eigenvalues.

Published in:

Ukrainian Mathematical Journal, 2012, v. 63, n. 9, p. 1349, doi. 10.1007/s11253-012-0583-7

By:

Bondar', A.;
Dymarskii, Ya.

Publication type:

Article

Regularization of two-term differential equations with singular coefficients by quasiderivatives.

Published in:

Ukrainian Mathematical Journal, 2012, v. 63, n. 9, p. 1361, doi. 10.1007/s11253-012-0584-6

By:

Goryunov, A.;
Mikhailets, V.

Publication type:

Article

Regular orthoscalar representations of the extended Dynkin graph $ {\tilde{E}_8} $ AND ∗-algebra associatedwith it.

Published in:

Ukrainian Mathematical Journal, 2011, v. 62, n. 8, p. 1213, doi. 10.1007/s11253-011-0425-z

By:

Kruhlyak, S.;
Livins'kyi, I.

Publication type:

Article

Refinement of a Hardy–Littlewood–Pólya-type inequality for powers of self-adjoint operators in a Hilbert space.

Published in:

Ukrainian Mathematical Journal, 2009, v. 61, n. 10, p. 1533, doi. 10.1007/s11253-010-0295-9

By:

Babenko, V. F.;
Bilichenko, R. O.

Publication type:

Article

On conditions under which the sum of self-adjoint operators with given integer spectra is a scalar operator.

Published in:

Ukrainian Mathematical Journal, 2008, v. 60, n. 4, p. 540, doi. 10.1007/s11253-008-0079-7

By:

Hrushevoi, R. V.

Publication type:

Article

Singularly perturbed self-adjoint operators in scales of Hilbert spaces.

Published in:

Ukrainian Mathematical Journal, 2007, v. 59, n. 6, p. 787, doi. 10.1007/s11253-007-0051-y

By:

Albeverio, S.;
Kuzhel’, S.;
Nizhnik, L.

Publication type:

Article

Jacobi matrices associated with the inverse eigenvalue problem in the theory of singular perturbations of self-adjoint operators.

Published in:

Ukrainian Mathematical Journal, 2006, v. 58, n. 12, p. 1876, doi. 10.1007/s11253-006-0173-7

By:

Koshmanenko, V.;
Tuhai, H.

Publication type:

Article

On spectral theorems for families of linearly connected self-adjoint operators with given spectra associated with extended Dynkin graphs.

Published in:

Ukrainian Mathematical Journal, 2006, v. 58, n. 11, p. 1768, doi. 10.1007/s11253-006-0167-5

By:

Ostrovs'kyi, V. L.;
Samoilenko, Yu. S.

Publication type:

Article

Singular Perturbations of Self-Adjoint Operators Associated with Rigged Hilbert Spaces.

Published in:

Ukrainian Mathematical Journal, 2005, v. 57, n. 5, p. 738, doi. 10.1007/s11253-005-0224-5

By:

Bozhok, R.;
Koshmanenko, V.

Publication type:

Article

Direct and Inverse Theorems in the Theory of Approximation by the Ritz Method.

Published in:

Ukrainian Mathematical Journal, 2005, v. 57, n. 5, p. 751, doi. 10.1007/s11253-005-0225-4

By:

Horbachuk, M.;
Hrushka, Ya.;
Torba, S.

Publication type:

Article

Point Spectrum of Singularly Perturbed Self-Adjoint Operators.

Published in:

Ukrainian Mathematical Journal, 2005, v. 57, n. 5, p. 776, doi. 10.1007/s11253-005-0227-2

By:

Konstantinov, O.

Publication type:

Article

On an Application of the Lax-Phillips Scattering Approach in the Theory of Singular Perturbations.

Published in:

Ukrainian Mathematical Journal, 2005, v. 57, n. 5, p. 806, doi. 10.1007/s11253-005-0230-7

By:

Kuzhel', S.;
Matsyuk, L.

Publication type:

Article

The Case Where the Sum of Three Partial Reflections is Equal to Zero.

Published in:

Ukrainian Mathematical Journal, 2003, v. 55, n. 9, p. 1542, doi. 10.1023/B:UKMA.0000018015.10875.e2

By:

Mellit, A. S.

Publication type:

Article

On the Point Spectrum of Self-Adjoint Operators That Appears under Singular Perturbations of Finite Rank.

Published in:

Ukrainian Mathematical Journal, 2003, v. 55, n. 9, p. 1532, doi. 10.1023/B:UKMA.0000018014.09570.ef

By:

Dudkin, M. E.;
Koshmanenko, V. D.

Publication type:

Article

Beta Fractional Derivative Sturm-Liouville Problems.

Published in:

Caspian Journal of Mathematical Sciences, 2025, v. 14, n. 1, p. 1, doi. 10.22080/cjms.2025.28151.1732

By:

ALLAHVERDIEV, Bilender P.;
TUNA, Hüseyin;
YALÇINKAYA, Yüksel

Publication type:

Article

Berezin number inequalities involving superquadratic functions.

Published in:

Caspian Journal of Mathematical Sciences, 2021, v. 10, n. 1, p. 18

By:

Gürdal, Mehmet;
Duman, Nazan

Publication type:

Article

IN MEMORIAM: Prof. Heinz Langer (1935-2024).

Published in:

Sarajevo Journal of Mathematics, 2024, v. 20, n. 2, p. 193, doi. 10.5644/SJM.20.02.01

By:

Borogovac, Muhamed

Publication type:

Article

TWICE DIFFERENTIABLE OSTROWSKI TYPE TENSORIAL NORM INEQUALITY FOR CONTINUOUS FUNCTIONS OF SELFADJOINT OPERATORS IN HILBERT SPACES.

Published in:

Electronic Journal of Mathematical Analysis & Applications, 2023, v. 11, n. 2, p. 1, doi. 10.21608/ejmaa.2023.199881.1014

By:

STOJILJKOVIĆ, V.

Publication type:

Article

Optimal system, nonlinear self-adjointness and conservation laws for generalized shallow water wave equation.

Published in:

Open Physics, 2018, v. 16, n. 1, p. 364, doi. 10.1515/phys-2018-0049

By:

Baleanu, Dumitru;
Inc, Mustafa;
Yusuf, Abdullahi;
Aliyu, Aliyu Isa

Publication type:

Article

Approximating Curve and Strong Convergence of the CQ Algorithm for the Split Feasibility Problem.

Published in:

Journal of Inequalities & Applications, 2010, v. 2010, p. 1, doi. 10.1155/2010/102085

By:

Fenghui Wang;
Hong-Kun Xu

Publication type:

Article

Some Reverses of the Jensen Inequality for Functions of Selfadjoint Operators in Hilbert Spaces.

Published in:

Journal of Inequalities & Applications, 2010, v. 2010, p. 1, doi. 10.1155/2010/496821

By:

Dragomir, S. S.

Publication type:

Article

Stability of a Second Order of Accuracy Difference Scheme for Hyperbolic Equation in a Hilbert Space.

Published in:

Discrete Dynamics in Nature & Society, 2007, p. 1, doi. 10.1155/2007/57491

By:

Ashyralyev, Allaberen;
Koksal, Mehmet Emir

Publication type:

Article

On the modified transmission eigenvalue problem with an artificial metamaterial background.

Published in:

Research in the Mathematical Sciences, 2021, v. 8, n. 3, p. 1, doi. 10.1007/s40687-021-00278-z

By:

Gintides, Drossos;
Pallikarakis, Nikolaos;
Stratouras, Kyriakos

Publication type:

Article

Solving an Inverse Problem for the Sturm-Liouville Operator with Singular Potential by Yurko's Method.

Published in:

Tamkang Journal of Mathematics, 2021, v. 52, n. 1, p. 125, doi. 10.5556/j.tkjm.52.2021.3700

By:

Bondarenko, Natalia P.

Publication type:

Article

ИЗКУСТВЕНИЯТ ИНТЕЛЕКТ – ПРОБЛЕМИ НА РЕАЛНОСТИ.

Published in:

Management & Education / Upravlenie i Obrazovanie, 2024, v. 20, n. 4, p. 69

By:

Атанасов, Николай

Publication type:

Article

DISCRETE TRACY-WIDOM OPERATORS.

Published in:

Proceedings of the Edinburgh Mathematical Society, 2009, v. 52, n. 3, p. 545, doi. 10.1017/S001309150700140X

By:

Blower, Gordon;
McCafferty, Andrew

Publication type:

Article

EXISTENCE AND UNIQUENESS RESULTS FOR AN INITIAL-BOUNDARY VALUE PROBLEM OF PARABOLIC OPERATOR-DIFFERENTIAL EQUATIONS IN A WEIGHT SPACE.

Published in:

TWMS Journal of Applied & Engineering Mathematics, 2021, v. 11, n. 3, p. 628

By:

AHMED, ABDEL BASET I.

Publication type:

Article

ASSOCIATED FUNCTIONS OF NON-SELFADJOINT STURM-LIOUVILLE OPERATOR WITH OPERATOR COEFFICIENT.

Published in:

TWMS Journal of Applied & Engineering Mathematics, 2021, v. 11, n. 1, p. 113

By:

MUTLU, G.

Publication type:

Article

NUMERICAL RANGE AND SUB-SELF-ADJOINT OPERATORS.

Published in:

TWMS Journal of Applied & Engineering Mathematics, 2020, v. 10, n. 2, p. 492

By:

CHETTOUH, R.;
BOUZENADA, S.

Publication type:

Article

Inverse problems for general parabolic systems and application to Ornstein-Uhlenbeck equation.

Published in:

Discrete & Continuous Dynamical Systems - Series S, 2024, v. 17, n. 5/6, p. 1, doi. 10.3934/dcdss.2022212

By:

Hassi, El Mustapha Ait Ben;
Chorfi, Salah-Eddine;
Maniar, Lahcen

Publication type:

Article

Thermoelasticity with antidissipation.

Published in:

Discrete & Continuous Dynamical Systems - Series S, 2022, v. 15, n. 8, p. 2173, doi. 10.3934/dcdss.2022040

By:

Conti, Monica;
Liverani, Lorenzo;
Pata, Vittorino

Publication type:

Article

Deep quench approximation and optimal control of general Cahn–Hilliard systems with fractional operators and double obstacle potentials.

Published in:

Discrete & Continuous Dynamical Systems - Series S, 2021, v. 14, n. 1, p. 243, doi. 10.3934/dcdss.2020213

By:

Colli, Pierluigi;
Gilardi, Gianni;
Sprekels, Jürgen

Publication type:

Article

ON EIGENELEMENTS SENSITIVITY FOR COMPACT SELF-ADJOINT OPERATORS AND APPLICATIONS.

Published in:

Discrete & Continuous Dynamical Systems - Series S, 2016, v. 9, n. 2, p. 445, doi. 10.3934/dcdss.2016006

By:

EL HAMIDI, ABDALLAH;
HAMDOUNI, AZIZ;
SALEH, MARWAN

Publication type:

Article

AN OPERATOR EXTENSION OF CARTWRIGHT-FIELD INEQUALITY.

Published in:

Journal of Mathematical Analysis, 2017, v. 8, n. 6, p. 64

By:

ALFAKHR, MAHDI TALEB;
OMIDVAR, MOHSEN ERFANIAN;
MORADI, HAMID REZA;
DRAGOMIR, SILVESTRU SEVER

Publication type:

Article

LARGE C*-ALGEBRAS OF UNIVERSALLY MEASURABLE OPERATORS.

Published in:

Quarterly Journal of Mathematics, 2014, v. 65, n. 3, p. 851, doi. 10.1093/qmath/hat058

By:

Brown, Lawrence G.

Publication type:

Article

On the Existence and Uniqueness of Generalized Solutions of Second Order Partial Operator-Differential Equations.

Published in:

Azerbaijan Journal of Mathematics, 2022, v. 12, n. 1, p. 68

By:

Aslanov, H. I.;
Hatamova, R. F.

Publication type:

Article

On a Boundary Value Problem for Fourth-Order Operator-Differential Equations with a Variable Coefficient.

Published in:

Azerbaijan Journal of Mathematics, 2020, v. 10, n. 1, p. 181

By:

Kalemkush, U. O.

Publication type:

Article

Stability of Ground States in Sectors and its Application to the Wigner–Weisskopf Model.

Published in:

Reviews in Mathematical Physics, 2001, v. 13, n. 4, p. 513, doi. 10.1142/S0129055X01000740

By:

Arai, Asao;
Hirokawa, Masao

Publication type:

Article

On the Problem of the Right Hamiltonian under Singular Form-Sum Perturbations.

Published in:

Reviews in Mathematical Physics, 2000, v. 12, n. 1, p. 1, doi. 10.1142/S0129055X00000022

By:

Albeverio, Sergio;
Koshmanenko, Volodymyr

Publication type:

Article

Multilevel approximation of Gaussian random fields: Fast simulation.

Published in:

Mathematical Models & Methods in Applied Sciences, 2020, v. 30, n. 1, p. 181, doi. 10.1142/S0218202520500050

By:

Herrmann, Lukas;
Kirchner, Kristin;
Schwab, Christoph

Publication type:

Article