Suchergebnisse - Linear operator approximation theory

A new class of gamma-type operator and its improvement: theory and numerical experiments

Autoren: Hassan Khosravian-Arab Mehdi Dehghan

Quelle: Computational and Applied Mathematics. 44

Schlagwörter: Linear operator approximation theory, Weierstrass' theorem, Approximations and expansions, Algorithms for approximation of functions, Numerical integration, positive linear operator, Voronovskaja's asymptotic formula, Korovkin theorem, Linear operator methods in interpolation, moment and extension problems, uniform convergence, second-order approximation

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/8034210
https://doi.org/10.1007/s40314-025-03174-2

A new class of positive linear operators and their improvement: theory and numerical experiments.

Autoren: Khosravian-Arab, Hassan Eslahchi, Mohammad Reza

Quelle: International Journal of Computer Mathematics. Dec2025, Vol. 102 Issue 12, p2117-2145. 29p.

Upper bound estimate for the norm of repeated de la Vallée Poussin operators

Autoren: Rovenska, Olga

Quelle: Journal of Mathematical Inequalities. :297-303

Schlagwörter: Linear operator approximation theory, repeated de la Vallée Poussin means, operator norm, Trigonometric approximation, upper bound estimation, Approximation by operators (in particular, by integral operators), Lebesgue constant

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/8032788
https://doi.org/10.7153/jmi-2025-19-20

On approximation properties of some non-positive Bernstein-Durrmeyer type operators

Autoren: Vasian Bianca Ioana

Quelle: Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 31, Iss 1, Pp 251-269 (2023)

Schlagwörter: Linear operator approximation theory, primary 47a58, 41a25, Rate of convergence, degree of approximation, Norms (inequalities, more than one norm, etc.) of linear operators, non-positive operators, secondary 47a30, 41a10, linear operators, Approximation by polynomials, bernstein-durrmeyer type operators, QA1-939, quantitative results, approximation by operators, Bernstein-Durrmeyer type operators, Mathematics

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/8036475
https://doi.org/10.2478/auom-2023-0014
https://doaj.org/article/e17ed30ed6c1458fb95ffcc52febb17d

A generalization of modified α-Bernstein operators and its related estimations and errors.

Autoren: Kaur, Jaspreet Goyal, Meenu Ansari, Khursheed J.

Quelle: Arabian Journal of Mathematics. Dec2024, Vol. 13 Issue 3, p521-531. 11p.

Schlagwörter: *APPROXIMATION theory, *POSITIVE operators, *LINEAR operators, *GENERALIZATION

On the Regularization by Durrmeyer-Sampling Type Operators in $$L^p$$-Spaces via a Distributional Approach: On the regularization by Durrmeyer-sampling type operators in \(L^p\)-spaces via a distributional approach

Autoren: Danilo Costarelli Michele Piconi Gianluca Vinti

Quelle: Journal of Fourier Analysis and Applications. 31

Schlagwörter: Linear operator approximation theory, Signal theory (characterization, reconstruction, filtering, etc.), Approximation by operators (in particular, by integral operators), Durrmeyer-sampling operators, Rate of convergence, degree of approximation, regularization properties, Bernstein classes, Distribution theory, Spaces of measurable functions (\(L^p\)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.), bandlimited kernel, Bandlimited kernel, Linear operators on function spaces (general), distribution theory, Regularization properties

Dateibeschreibung: application/xml

Zugangs-URL: https://hdl.handle.net/11391/1601654
https://doi.org/10.1007/s00041-024-10121-y

Korovkin's Linear operators and Approximation Theory and Sequence of Functions

Autoren: Hatai, Subinoy D, Sukumar

Index Begriffe: Mathematics, Thesis, NonPeerReviewed

URL: http://raiith.iith.ac.in/4048/1/Thesis_Msc_MA_4048.pdf
http://raiith.iith.ac.in/4048/
http://raiith.iith.ac.in/4048

On Spectral Approximation of Linear Operators: On spectral approximation of linear operators

Autoren: Rafikul Alam

Quelle: Journal of Mathematical Analysis and Applications. 226:229-244

Schlagwörter: Linear operator approximation theory, discrete spectrum, discrete spectra, Perturbation theory of linear operators, Applied Mathematics, spectral subspace, 01 natural sciences, eigenvector, spectral approximation, Eigenvalue problems for linear operators, eigenvalue, 0101 mathematics, spectral projection, Analysis

Dateibeschreibung: application/xml

Zugangs-URL: https://core.ac.uk/display/82225890
http://www.sciencedirect.com/science/article/pii/S0022247X98960711
https://www.sciencedirect.com/science/article/pii/S0022247X98960711

Bernstein-Type Estimates for Periodic Functions of Several Variables with Generalized Smoothness.

Autoren: Laktionova, N. V. Runovskii, K. V. Shpyrko, O. A.

Quelle: Mathematical Notes. Apr2025, Vol. 117 Issue 3, p673-676. 4p.

Schlagwörter: *APPROXIMATION theory, *INTEGRABLE functions, *LAPLACIAN operator, *DIFFERENTIAL operators, *OPERATOR theory

Learning theory viewpoint of approximation by positive linear operators

Autoren: Lv, Shaogao Shi, Lei

Quelle: Computers & Mathematics with Applications. Dec2010, Vol. 60 Issue 12, p3177-3186. 10p.

Schlagwörter: *COMPUTATIONAL learning theory, *APPROXIMATION theory, *LINEAR operators, *REGRESSION analysis, *KERNEL functions, *ALGORITHMS, *ERROR analysis in mathematics

THREE-COMPONENT VERSION OF THE TIKHONOV REGULARIZATION METHOD FOR OPERATOR EQUATIONS OF THE FIRST KIND.

Autoren: Vasin V. V. Belyaev V. V.

Quelle: Eurasian Journal of Mathematical & Computer Applications (EJMCA); 2024, Vol. 12 Issue 2, p155-163, 9p

Schlagwörter: OPERATOR equations, TIKHONOV regularization, LINEAR operators, APPROXIMATION theory, SOBOLEV spaces, FREDHOLM equations, SUBGRADIENT methods

Approximation theory using positive linear operators / Radu Păltănea.

Autoren: Păltânea, Radu (1953- ).

Quelle: Bibliogr. s. 195-200. Indeks.

Zugangs-URL: http://katalog.nukat.edu.pl/lib/item?id=chamo:1019658&theme=nukat

الگوريتمي جديد براي حل مساله نقطه ثابت مشترك شكافتني و كاربردهاي آن. (Persian)

Alternate Title: A New Algorithm for Solving Split Common Fixed Point Problem with Applications. (English)

Autoren: محمد اسلاميان

Quelle: Mathematical Researches; 2024, Vol. 10 Issue 1, p33-50, 18p

Schlagwörter: APPROXIMATION theory, BANACH spaces, HILBERT space, REAL numbers, LINEAR operators, NONEXPANSIVE mappings, FIXED point theory

Approximations by linear operators in spaces of fuzzy continuous functions

Autoren: Burgin, Mark Duman, Oktay

Index Begriffe: Positive linear operator, The Korovkin theorem, Fuzzy limits, Fuzzy convergence, Article

URL: https://hdl.handle.net/20.500.11851/6299
https://doi.org/10.1007/s11117-009-0041-4
Positivity
Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı

On Low Rank Approximation of Linear Operators in -Norms and Some Algorithms.

Autoren: Liu, Yang¹

Quelle: Asia-Pacific Journal of Operational Research. Aug2016, Vol. 33 Issue 4, p-1. 12p.

Schlagwörter: *APPROXIMATION theory, *ALGORITHMS, LINEAR operators, MINKOWSKI space, DIFFERENTIAL geometry, MATHEMATICS theorems

Approximation by certain linear operators preserving x².

Autoren: Rempulska, Lucyna Tomczak, Karolina

Quelle: Turkish Journal of Mathematics. 2009, Vol. 33 Issue 3, p273-281. 9p.

Schlagwörter: *APPROXIMATION theory, *LINEAR operators, *OPERATOR theory, *FUNCTIONAL analysis, *NUMERICAL analysis, *MATHEMATICS

Perturbation theory for the approximation of stability spectra by QR methods for sequences of linear operators on a Hilbert space

Autoren: Badawy, M. Van Vleck, E.

Quelle: Linear Algebra & its Applications. Jul2012, Vol. 437 Issue 1, p37-59. 23p.

Schlagwörter: *PERTURBATION theory, *APPROXIMATION theory, *SPECTRAL theory, *MATHEMATICAL sequences, *LINEAR operators, *HILBERT space, *PARTIAL differential equations

Approximation and then-Berezin transform of operators on the Bergman space: Approximation and the \(n\)-Berezin transform of operators on the Bergman space

Autoren: Suarez, Fernando Daniel

Quelle: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas

Schlagwörter: Linear operator approximation theory, BEREZIN TRANSFORMS, Linear operators in algebras, TOEPLITZ OPERATORS, 01 natural sciences, Toeplitz algebra, Algebras of specific types of operators (Toeplitz, integral, pseudodifferential, etc.), Berezin transform, Toeplitz operator, Toeplitz operators, Hankel operators, Wiener-Hopf operators, Bergman space, 0101 mathematics, Hilbert spaces of continuous, differentiable or analytic functions, BERGMAN SPACE

Dateibeschreibung: application/xml; application/pdf

Zugangs-URL: https://ri.conicet.gov.ar/bitstream/11336/108528/2/CONICET_Digital_Nro.f71245b5-037e-4af9-8be8-83d82b9cf658_A.pdf
https://ri.conicet.gov.ar/handle/11336/108528
https://www.degruyter.com/document/doi/10.1515/crll.2005.2005.581.175/html
https://notablesdelaciencia.conicet.gov.ar/handle/11336/108528
https://ri.conicet.gov.ar/bitstream/11336/108528/2/CONICET_Digital_Nro.f71245b5-037e-4af9-8be8-83d82b9cf658_A.pdf
http://hdl.handle.net/11336/108528

DISCRETE APPROXIMATION OF NON-COMPACT OPERATORS DESCRIBING CONTINUUM-OF-ALLELES MODELS: Discrete approximation of non-compact operators describing continuum-of-alleles models

Autoren: Oliver Redner

Quelle: Proceedings of the Edinburgh Mathematical Society. 47:449-472

Schlagwörter: Linear operator approximation theory, Eigenvalue problems for integral equations, non-compact operators, Applications of operator theory in chemistry and life sciences, 45C05, 47A58, 47B34, Numerical methods for integral equations, multiplication operators, 01 natural sciences, mutation-selection models, Mathematics - Spectral Theory, FOS: Mathematics, discretization, Genetics and epigenetics, Kernel operators, continuum-of-alleles models, 0101 mathematics, Spectral Theory (math.SP), kernel operators

Dateibeschreibung: application/xml

Zugangs-URL: https://www.cambridge.org/core/services/aop-cambridge-core/content/view/0C841B93ED852FA12720803B31618300/S0013091503000476a.pdf/div-class-title-discrete-approximation-of-non-compact-operators-describing-continuum-of-alleles-models-div.pdf
http://arxiv.org/abs/math/0301024
https://zbmath.org/2135020
https://doi.org/10.1017/s0013091503000476
https://www.arxiv-vanity.com/papers/math/0301024/
http://ui.adsabs.harvard.edu/abs/2003math......1024R/abstract
https://arxiv.org/pdf/math/0301024
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/0C841B93ED852FA12720803B31618300/S0013091503000476a.pdf/div-class-title-discrete-approximation-of-non-compact-operators-describing-continuum-of-alleles-models-div.pdf
https://www.cambridge.org/core/journals/proceedings-of-the-edinburgh-mathematical-society/article/discrete-approximation-of-noncompact-operators-describing-continuumofalleles-models/0C841B93ED852FA12720803B31618300
https://arxiv.org/abs/math/0301024
https://arxiv.org/pdf/math/0301024v2

On polynomial approximation of the inverseof an operator: On polynomial approximation of the inverse of an operator

Autoren: Avraham Feintuch

Quelle: Linear Algebra and its Applications. 389:323-328

Schlagwörter: Linear operator approximation theory, Numerical Analysis, Algebra and Number Theory, Hilbert space, General (adjoints, conjugates, products, inverses, domains, ranges, etc.), resolvent, Invertible operator, 01 natural sciences, Invariant subspace, Abstract approximation theory (approximation in normed linear spaces and other abstract spaces), Approximation by polynomials, invariant subspace, Discrete Mathematics and Combinatorics, invertible operator, inverse operator, Geometry and Topology, 0101 mathematics, Resolvent

Dateibeschreibung: application/xml

Zugangs-URL: https://core.ac.uk/display/82051614
https://www.sciencedirect.com/science/article/pii/S0024379504001557