Výsledky vyhledávání - "SELFADJOINT operators"

A new formula for the weighted Moore–Penrose inverse and its applications.

Autoři: Xu, Qingxiang¹ (AUTHOR) qingxiang_xu@126.com

Zdroj: Banach Journal of Mathematical Analysis. Oct2025, Vol. 19 Issue 4, p1-36. 36p.

Témata: POSITIVE operators, SELFADJOINT operators

ON ONE PROPERTY OF THE NUMERICAL RANGE OF A TWO-PARAMETER SPECTRAL PROBLEM.

Alternate Title: ОБ ОДНОМ СВОЙСТВЕ ЧИСЛОВОГО ОБРАЗА ДВУХПАРАМЕТРИЧЕСКОЙ СПЕКТРАЛЬНОЙ ЗАДАЧИ.

Autoři: Tagi, Mustafayev Sadig Mammadov, Eldar Sh. Cumshud, Kasamanli Hamlet a další

Zdroj: German International Journal of Modern Science / Deutsche Internationale Zeitschrift für Zeitgenössische Wissenschaft. Oct2025, Issue 114, p26-30. 5p.

Témata: SELFADJOINT operators, SPECTRAL theory, VECTOR spaces, PARAMETERIZATION

Estimates for the lower and upper bounds of the essential spectrum of a 3x3 operator matrix.

Autoři: Jurakulova, Farangis¹ (AUTHOR) juraqulova.farangis@mail.ru

Zdroj: AIP Conference Proceedings. 2025, Vol. 3377 Issue 1, p1-6. 6p.

Témata: *SELFADJOINT operators, *FOCK spaces, *LATTICE theory, *PARTICLES (Nuclear physics), *FREQUENCY spectra, *DISPERSION relations, *LINEAR operators

Almost commuting self-adjoint operators and iterated commutator estimates.

Autoři: Geisler, Jakob¹ (AUTHOR) jakob.geisler@tu-bs.de

Zdroj: Linear Algebra & its Applications. Dec2025, Vol. 727, p388-411. 24p.

Témata: *SELFADJOINT operators, *OPERATOR theory, *DIFFERENTIAL equations, *MATHEMATICAL analysis

The Kreĭn-Šmul'jan theorem revisited.

Autoři: Gonzalez Zerbo, Santiago Maestripieri, Alejandra Martínez Pería, Francisco

Zdroj: Linear Algebra & its Applications. Dec2025, Vol. 727, p163-177. 15p.

Témata: *SELFADJOINT operators, *HILBERT space, *OPERATOR functions, *MATHEMATICS, *MATHEMATICAL functions, *POSITIVE operators

Uniqueness results for skew‐self‐adjoint Dirac system with rectangular potential.

Autoři: Li, Tiezheng¹ (AUTHOR) litiezhengmath@sina.com

Zdroj: Mathematische Nachrichten. Nov2025, p1. 16p.

Témata: *DIRAC equation, *SELFADJOINT operators, *POTENTIAL barrier, *MATHEMATICS theorems, *DIRAC function, *ASYMPTOTIC expansions

Kuroda's theorem for n‐tuples in semifinite von Neumann algebras.

Autoři: Ber, Aleksey Sukochev, Fedor Zanin, Dmitriy a další

Zdroj: Journal of the London Mathematical Society. Nov2025, Vol. 112 Issue 5, p1-32. 32p.

Témata: *VON Neumann algebras, *SELFADJOINT operators, *LORENTZ spaces, *NONCOMMUTATIVE function spaces

Operator sequence-based phase retrieval on quaternionic left Hilbert spaces.

Autoři: Yang, Ming Li, Yun-Zhang

Zdroj: Analysis & Applications. Oct2025, p1-20. 20p.

Témata: *HILBERT space, *SELFADJOINT operators, *COMPLEMENTARITY constraints (Mathematics)

On Fong-Tsui conjecture and binormality of operators.

Autoři: Stanković, Hranislav¹ (AUTHOR) hranislav.stankovic@elfak.ni.ac.rs

Zdroj: Mathematica Slovaca. Oct2025, Vol. 75 Issue 5, p1221-1228. 8p.

Témata: *SELFADJOINT operators, *POSITIVE operators, *OPERATOR theory, *INJECTIVE functions, *COMPACT operators

Functions of self‐adjoint operators under relatively bounded and relatively trace class perturbations.

Autoři: Aleksandrov, A. B. Peller, V. V.

Zdroj: Mathematische Nachrichten. Sep2025, Vol. 298 Issue 9, p3027-3048. 22p.

Témata: *SELFADJOINT operators, *PERTURBATION theory, *MATHEMATICAL formulas, *OPERATOR functions, *INTEGRAL operators

Unbounded Integral Hankel Operators.

Autoři: Pushnitski, Alexander Treil, Sergei R.

Zdroj: Functional Analysis & Its Applications. Sep2025, Vol. 59 Issue 3, p297-320. 24p.

Témata: *HANKEL operators, *SELFADJOINT operators, *MATHEMATICAL analysis, *SMOOTHNESS of functions, *FUNCTIONAL analysis, *MATHEMATICAL functions, *OPERATOR theory

Homogenization of the Lévy-type Operators.

Autoři: Zhizhina, Elena Piatnitski, Andrey Sloushch, Vladimir a další

Zdroj: Functional Analysis & Its Applications. Sep2025, Vol. 59 Issue 3, p251-257. 7p.

Témata: *SELFADJOINT operators, *QUADRATIC forms, *APPROXIMATION error, *OPERATOR equations, *OPERATOR functions, *MATHEMATICAL analysis

Properties of semigroups generated by abstract problems arising from Timoshenko-type systems.

Autoři: Alves, Leonardo Gustavo Ronchin Monteiro, Rodrigo Nunes

Zdroj: Journal of Hyperbolic Differential Equations. Sep2025, Vol. 22 Issue 3, p519-540. 22p.

Témata: *SEMIGROUPS (Algebra), *SELFADJOINT operators, *EXPONENTIAL stability, *GEVREY class, *MATHEMATICAL analysis, *HILBERT space, *ENERGY dissipation, *DYNAMICAL systems

Self-adjoint eigenvalue problems and non-Hermitian quantum mechanics.

Autoři: Huhtanen, Marko¹ (AUTHOR) Marko.Huhtanen@aalto.fi

Zdroj: Journal of Mathematical Physics. Aug2025, Vol. 66 Issue 8, p1-16. 16p.

Témata: *SELFADJOINT operators, *QUANTUM mechanics, *SYMMETRIC operators, *EIGENVALUES, *ITERATIVE methods (Mathematics), *EIGENVECTORS, *INNER product spaces

Spectral Theory for Compact and Self‐Adjoint Fractional Resolvent Families.

Autoři: Zhang, Kun‐Yi Li, Miao

Zdroj: Mathematical Methods in the Applied Sciences. Aug2025, Vol. 48 Issue 12, p11660-11669. 10p.

Témata: *SPECTRAL theory, *SELFADJOINT operators, *OPERATOR theory, *FRACTIONAL differential equations, *COMPACT operators, *ERGODIC theory

On the reduction of powers of self-adjoint operators.

Autoři: Kebli, Salima Mortad, Mohammed Hichem

Zdroj: QM - Quaestiones Mathematicae. Jul2025, Vol. 48 Issue 7, p1127-1136. 10p.

Témata: *SELFADJOINT operators, *SYMMETRIC operators, *OPERATOR theory

Convolution Type Operators With Potential: Essential and Infinite Discrete Spectrum.

Autoři: Borisov, Denis Piatnitski, Andrey Zhizhina, Elena

Zdroj: Mathematical Methods in the Applied Sciences. 5/30/2025, Vol. 48 Issue 8, p8687-8695. 9p.

Témata: *EIGENVALUES, *SELFADJOINT operators

On the Equality A = A 1 A 2 for Linear Relations.

Autoři: Roman, Marcel Sandovici, Adrian

Zdroj: Axioms (2075-1680). Apr2025, Vol. 14 Issue 4, p239. 12p.

Témata: *SELFADJOINT operators, *LINEAR operators, *HILBERT space, *MOTIVATION (Psychology)

STABILITY OF LARGE RAINBOW INTERSECTING FAMILIES WITH PRODUCT MEASURE.

Autoři: ANYUAN TIAN YAOKUN WU

Zdroj: SIAM Journal on Discrete Mathematics. 2025, Vol. 39 Issue 2, p973-1012. 40p.

Témata: *SELFADJOINT operators, *DISTRIBUTION (Probability theory), *MATHEMATICAL bounds, *STATISTICAL reliability

Elastic Junctions of a Plate with Rods and Self-Adjoint Extensions of Differential Operators.

Autoři: Nazarov, S. A.¹ (AUTHOR) srgnazarov@yahoo.co.uk

Zdroj: Differential Equations. Apr2025, Vol. 61 Issue 4, p504-524. 21p.

Témata: *DIFFERENTIAL operators, *SELFADJOINT operators, *STRUCTURAL components, *ASYMPTOTIC analysis, *MATHEMATICAL inequalities, *BIHARMONIC functions, *OSCILLATIONS