Suchergebnisse - clasificacion ams::47 operator theory::47a general theory of linear operators

An application of perturbation theory for linear operators. Sensitivity analysis of Leslie matrix models

Autoren: Chen, Kewei

Schlagwörter: numerical example, Population dynamics (general), sensitivity analysis of Leslie matrix models, Perturbation theory of linear operators, Basic linear algebra, environmental change, resolvent, age-structured biological population

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/4031467

on the equivalence of spectra of linear partial differential operators in certain function spaces: On the equivalence of spectra of linear partial differential operators in certain function spaces

Autoren: V. M. Tyurin

Quelle: Mathematical Notes. 72(5):833-840

Schlagwörter: General theory of partial differential operators, linear partial differential operator, equivalence of spectra, invertibility, Spectrum, resolvent

Dateibeschreibung: application/xml

Zugangs-URL: https://link.springer.com/article/10.1023/A%3A1021494014087

maximum principle in suboptimal control theory of distributed parameter systems with operator constraints in a hilbert space: Maximum principle in suboptimal control theory of distributed parameter systems with operator constraints in a Hilbert space

Autoren: M. I. Sumin

Quelle: Journal of Mathematical Sciences. 104(104):1060-1086

Schlagwörter: optimal control, regularity, Control/observation systems governed by partial differential equations, maximum principle, PDE in connection with control problems, Linear operators on function spaces (general), Optimality conditions for problems involving partial differential equations, suboptimal control, linear parabolic equation

Dateibeschreibung: application/xml

Zugangs-URL: https://link.springer.com/article/10.1023/A%3A1009535725511

completeness theorems for dirac type operators with boundary conditions of general form depending on the spectral parameter: Completeness theorems for Dirac-type operators with boundary conditions of general form that depend on the spectral parameter.

Autoren: Seppo Hassi Leonid Leonidovich Oridoroga

Quelle: Mathematical Notes. 74(1):302-307

Schlagwörter: Cauchy problem, boundary conditions of general form, system of eigen and adjoint functions, Particular ordinary differential operators (Dirac, one-dimensional Schrödinger, etc.), Linear boundary value problems for ordinary differential equations, General theory of ordinary differential operators, system of integro-differential equations, Dirac-type operator, Sturm-Liouville problem, completeness theorem, Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators

Dateibeschreibung: application/xml

Zugangs-URL: https://link.springer.com/article/10.1023/A:1025072628519

An optimality principle for the error when solving approximately equations with non-linear operators

Autoren: V.A. Morozov

Quelle: USSR Computational Mathematics and Mathematical Physics. 14:1-9

Schlagwörter: 03 medical and health sciences, 0302 clinical medicine, Equations involving nonlinear operators (general), 0102 computer and information sciences, General theory of numerical analysis in abstract spaces, 01 natural sciences

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/3567903
https://doi.org/10.1016/0041-5553(74)90067-6
https://www.sciencedirect.com/science/article/pii/0041555374900676

Regularity Properties and Generalized Inverses of Delta-Related Operators: Regularity properties and generalized inverses of delta-related operators

Autoren: Luis P. Castro Frank-Olme Speck

Quelle: Zeitschrift für Analysis und ihre Anwendungen. 17:577-598

Schlagwörter: Integral operators, Systems of singular linear integral equations, relations between operator matrices, generalized inverses, General (adjoints, conjugates, products, inverses, domains, ranges, etc.), singular integral operators with Carleman shift, delta-related operators, delta relations, 01 natural sciences, Factorization theory (including Wiener-Hopf and spectral factorizations) of linear operators, generalized inversion, Toeplitz operators, Hankel operators, Wiener-Hopf operators, Theory of matrix inversion and generalized inverses, invertibility symbol, 0101 mathematics, factorization theory

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1211542
https://doi.org/10.4171/zaa/840
https://www.ems-ph.org/journals/show_pdf.php?issn=0232-2064&vol=17&iss=3&rank=4
https://ems.press/content/serial-article-files/5870
https://ems.press/journals/zaa/articles/11162
https://www.ems-ph.org/journals/show_abstract.php?issn=0232-2064&vol=17&iss=3&rank=4

perturbations of magnetic schrodinger operators: Perturbations of magnetic Schrödinger operators

Autoren: Mihai Pascu M. Măntoiu

Quelle: Letters in Mathematical Physics. 54(3):181-192

Schlagwörter: Perturbation theory of linear operators, spectral properties, Perturbation theories for operators and differential equations in quantum theory, General topics in linear spectral theory for PDEs, Selfadjoint operator theory in quantum theory, including spectral analysis

Dateibeschreibung: application/xml

Zugangs-URL: https://link.springer.com/article/10.1023/A:1010933504909

constructive approximations of markov operators: Constructive approximations of Markov operators

Autoren: Ding, Jiu Zhou, Aihui

Quelle: Journal of Statistical Physics. 105(5):863-878

Schlagwörter: Ergodic theorems, spectral theory, Markov operators, fixed densities, Linear operators on function spaces (general), Markov operators, bounded variation, Physical Sciences and Mathematics, markov operators, continuous piecewise linear approximations, markov finite approximations, Mathematics

Dateibeschreibung: application/xml

Zugangs-URL: https://aquila.usm.edu/fac_pubs/3730/
https://link.springer.com/article/10.1023/A%3A1013553227865

limiting absorption principle at critical values for the dirac operator: Limiting absorption principle at critical values for the Dirac operator

Autoren: M. Măntoiu A. Iftimovici

Quelle: Letters in Mathematical Physics. 49(3):235-243

Schlagwörter: perturbations, General theory of partial differential operators, Elliptic equations on manifolds, general theory, Scattering theory of linear operators, Dirac operator, absence of the singular spectrum, resolvent, existence and unitarity of the wave operators

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1423489
https://doi.org/10.1023/a:1007625918845
https://link.springer.com/article/10.1023/A:1007625918845

schrodinger operator eigenvalue resonance on a zone boundary: Schrödinger operator eigenvalue (resonance) on a zone boundary

Autoren: Yu. P. Chuburin

Quelle: Theoretical and Mathematical Physics. 126(2):161-168

Schlagwörter: Schrödinger operator, Schrödinger equation, Perturbation theory of linear operators, General theory of partial differential operators, Perturbation theories for operators and differential equations in quantum theory, Selfadjoint operator theory in quantum theory, including spectral analysis

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1728897
https://doi.org/10.1023/a:1005287525569
https://link.springer.com/article/10.1023%2FA%3A1005287525569

special factorization of a noninvertible fredholm operator of the second kind: Special factorization of a noninvertible Fredholm operator of the second kind

Autoren: G. A. Grigoryan

Quelle: Differential Equations. 38(12):1792-1800

Schlagwörter: Integral operators, integral equation, Linear operators on function spaces (general), Factorization theory (including Wiener-Hopf and spectral factorizations) of linear operators, eigenvalue, Fredholm integral equations, Fredholm operator, operator factorization

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/2173689
https://doi.org/10.1023/a:1023872432557
https://link.springer.com/article/10.1023/A:1023872432557

on a class of operator equations: On a class of operator equations.

Autoren: B. D. Gel’man

Quelle: Mathematical Notes. 70(3):494-501

Schlagwörter: Banach spaces, Degree theory for nonlinear operators, dimension, Equations involving nonlinear operators (general), continuous surjective linear operator, operator equation, boundedness, completely continuous nonlinear operator, solution set

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1927792
https://doi.org/10.1023/a:1012376602648
https://link.springer.com/article/10.1023/A:1012376602648

Singular Schroedinger Operator as Limits of Point Interaction Hamiltonians: Singular Schrödinger operators as limits of point interaction Hamiltonians

Autoren: Brasche J. F. FIGARI, RODOLFO Teta A.

Quelle: Potential Analysis. 8(2):163-178

Schlagwörter: Schrödinger operator, Schrödinger equation, Monte-Carlo methods, General topics in linear spectral theory for PDEs, resolvent convergence, Random linear operators, generalized Schrödinger operator

Dateibeschreibung: application/xml

Zugangs-URL: http://hdl.handle.net/11588/364273
https://link.springer.com/article/10.1023%2FA%3A1008654423238
https://link.springer.com/content/pdf/10.1023/A:1008654423238.pdf
https://hdl.handle.net/11588/364273

on the spectrum of an equivariant extension of the laplace operator in a ball: On the spectrum of an equivariant extension of the Laplace operator in a ball

Autoren: T. V. Shtepina V. P. Burskii

Quelle: Ukrainian Mathematical Journal. 52(11):1679-1690

Schlagwörter: Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation, General theory of partial differential operators, correct boundary value problem, solvable extension, General topics in linear spectral theory for PDEs, Laplacian

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1631387
https://link.springer.com/article/10.1023/A%3A1010475003292

hilbert and bessel properties of systems of root functions of 2mth order operators: Hilbert and Bessel properties of systems of root functions of \(2m\)th-order operators

Autoren: N. V. Assonova

Quelle: Differential Equations. 37(3):320-331

Schlagwörter: Bessel properties, Hilbert space, General theory of ordinary differential operators, eigenfunctions, (Generalized) eigenfunction expansions of linear operators, rigged Hilbert spaces, root functions, Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators, Hilbert properties

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1685261
https://doi.org/10.1023/a:1019286330493
https://link.springer.com/article/10.1023/A%3A1019286330493

scalar operators representable as a sum of projectors: Scalar operators representable as a sum of projectors

Autoren: V. I. Rabanovich Yu. S. Samoilenko

Quelle: Ukrainian Mathematical Journal. 53(7):1116-1133

Schlagwörter: General theory of \(C^*\)-algebras, orthoprojector, Hilbert space, theory of representations, Representation theory of linear operators, \(C^{*}\)-algebra

Dateibeschreibung: application/xml

Zugangs-URL: https://link.springer.com/article/10.1023/A:1013329232230

al spaces and am spaces of operators: AL-spaces and AM-spaces of operators

Autoren: Wickstead, Anthony

Quelle: Positivity. 4(3):303-311

Schlagwörter: Banach lattices, Isomorphic theory (including renorming) of Banach spaces, AL-space, name=Analysis, Positive linear operators and order-bounded operators, regular operators between Banach lattices, name=General Mathematics, operator space, isomorphic theory, Isometric theory of Banach spaces, isometric theory, AM-space, Ordered topological linear spaces, vector lattices, Ordered normed spaces, regular norm

Dateibeschreibung: application/xml

Zugangs-URL: https://pure.qub.ac.uk/en/publications/al-spaces-and-am-spaces-of-operators
https://link.springer.com/content/pdf/10.1023/A:1009803007323.pdf
https://link.springer.com/article/10.1023/A%3A1009803007323

complex powers of some second order differential operators with constant complex coefficients in lp spaces: Complex powers of some second-order differential operators with constant complex coefficients in \(L_p\)-spaces

Autoren: V. A. Nogin A. V. Abramyan

Quelle: Differential Equations. 37(8):1168-1170

Schlagwörter: complex power, Integral representations, integral operators, integral equations methods in higher dimensions, General theory of partial differential operators, differential operator, Potentials and capacities on other spaces, General topics in linear spectral theory for PDEs, integral representation, inversion of potentials

Dateibeschreibung: application/xml

Zugangs-URL: https://link.springer.com/content/pdf/10.1023/A:1012479704641.pdf
https://link.springer.com/article/10.1023%2FA%3A1012479704641

a discreteness criterion for the spectrum of the laplace beltrami operator on quasimodel manifolds: A discreteness criterion for the spectrum of the Laplace--Beltrami operator on quasimodel manifolds

Autoren: Andrey Svetlov

Quelle: Siberian Mathematical Journal. 43(6):1103-1111

Schlagwörter: discrete spectrum, Special Riemannian manifolds (Einstein, Sasakian, etc.), noncompact Riemannian manifold, Elliptic equations on manifolds, general theory, Laplace-Beltrami operator, Spectral problems, spectral geometry, scattering theory on manifolds, General topics in linear spectral theory for PDEs, discreteness criterion

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1899844
https://link.springer.com/article/10.1023/A%3A1021129703899
https://eudml.org/doc/50258

On bounded perturbations of operators of Klein-Gordon type

Autoren: Jonas, Peter

Schlagwörter: perturbed Klein-Gordon equation, Linear operators on spaces with an indefinite metric, Perturbation theory of linear operators, General theory of partial differential operators, nonnegative selfadjoint operators in Krein space, bounded perturbations

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/1487067