Výsledky vyhledávání - 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

Autoři: Chen, Kewei

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: V. M. Tyurin

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

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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: M. I. Sumin

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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.

Autoři: Seppo Hassi Leonid Leonidovich Oridoroga

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: https://link.springer.com/article/10.1023/A:1025072628519

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

Autoři: V.A. Morozov

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: Luis P. Castro Frank-Olme Speck

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: Mihai Pascu M. Măntoiu

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: https://link.springer.com/article/10.1023/A:1010933504909

constructive approximations of markov operators: Constructive approximations of Markov operators

Autoři: Ding, Jiu Zhou, Aihui

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: M. Măntoiu A. Iftimovici

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: Yu. P. Chuburin

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: G. A. Grigoryan

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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.

Autoři: B. D. Gel’man

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

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

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

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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: T. V. Shtepina V. P. Burskii

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: N. V. Assonova

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

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

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

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

Popis souboru: application/xml

Přístupová URL adresa: https://link.springer.com/article/10.1023/A:1013329232230

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

Autoři: Wickstead, Anthony

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: V. A. Nogin A. V. Abramyan

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: Andrey Svetlov

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

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: 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

Autoři: Jonas, Peter

Témata: 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

Popis souboru: application/xml

Přístupová URL adresa: https://zbmath.org/1487067