Výsledky vyhľadávania - "Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis"

Structure of the Nuttall partition for some class of four-sheeted Riemann surfaces

Autori: Ikonomov, N. R. Suetin, S. P.

Zdroj: Transactions of the Moscow Mathematical Society. 83:33-54

Predmety: Mathematics - Complex Variables, 30E10, 41A21, multivalued analytic function, 01 natural sciences, Riemann surfaces, Riemann surface, Hermite-Padé polynomials, 0103 physical sciences, FOS: Mathematics, Nuttall partition, 0101 mathematics, Complex Variables (math.CV), Padé approximation, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/abs/2103.04703
https://zbmath.org/7937519
https://doi.org/10.1090/mosc/344

Ladder operators for generalized Zernike or disk polynomials

Autori: Misael E. Marriaga

Zdroj: BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
Universidad Rey Juan Carlos

Predmety: Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), disk polynomials, ladder operators, Orthogonal polynomials, Mathematics - Classical Analysis and ODEs, Ladder operators, Orthogonal polynomials and functions in several variables expressible in terms of special functions in one variable, Classical Analysis and ODEs (math.CA), FOS: Mathematics, Disk polynomials, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, orthogonal polynomials, 42C05, 33C50, 33C45

Popis súboru: application/pdf; application/xml

Prístupová URL adresa: http://arxiv.org/abs/2405.02988
https://hdl.handle.net/10115/85697
https://zbmath.org/8037496
https://doi.org/10.1007/s40590-025-00748-2

Falling Operators with Their Connections with the Degenerate Poisson Appell Polynomials: Falling operators with their connections with the degenerate Poisson Appell polynomials

Autori: Riahi, Anis Rhaima, Mohamed Ghoudi, Hamza

Zdroj: Complex Analysis and Operator Theory. 19

Predmety: Probabilistic potential theory, degenerate falling operators, Appell polynomials, Real polynomials: analytic properties, etc, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, Mittag-Leffler functions and generalizations, degenerate Poisson measure, Polynomials in number theory

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/8033590
https://doi.org/10.1007/s11785-025-01673-y

Orthogonal Laurent Polynomials of Two Real Variables: Orthogonal Laurent polynomials of two real variables

Autori: Cruz Barroso, Ruymán Fernández Rodríguez, Lidia

Zdroj: Digibug. Repositorio Institucional de la Universidad de Granada
Universidad de Granada (UGR)

Predmety: orthogonal Laurent polynomials of two real variables, recurrence relations, balanced ordering, Favard's theorem, FOS: Mathematics, Christoffel–Darboux and confluent formula, Christoffel-Darboux and confluent formula, Mathematics - Numerical Analysis, Numerical Analysis (math.NA), Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 33C45, 42C05

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/abs/2404.14303
https://hdl.handle.net/10481/97136

On the orthonormal Franklin system

Autori: Nemeth, Jozsef

Zdroj: Publicationes Mathematicae Debrecen. 19:181-185

Predmety: Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.), Best approximation, Chebyshev systems, Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), Convergence and absolute convergence of Fourier and trigonometric series, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3419698

Eine Bemerkung über das Maximum von Summen orthogonaler Funktionen

Autori: Tandori, Karoly

Zdroj: Publicationes Mathematicae Debrecen. 20:89-92

Predmety: 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3432885

Degree of approximation by harmonic means of Fourier--Laguerre expansions: Degree of approximation by harmonic means of Fourier-Laguerre expansions

Autori: Singh, Tikam

Zdroj: Publicationes Mathematicae Debrecen. 24:53-57

Predmety: Approximation by polynomials, Cesàro, Euler, Nörlund and Hausdorff methods, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3584327

Über die de la Vallée-Poussinschen Mittel allgemeiner Orthogonalreihen

Autori: Leindler, László

Zdroj: Publicationes Mathematicae Debrecen. 10:274-282

Predmety: approximation and series summability, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3210198

Über die Charakterisierung orthogonaler Systeme von Haarschem Typ

Autori: Mikolas, M.

Zdroj: Publicationes Mathematicae Debrecen. 19:239-248

Predmety: 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3445810

On the Lebesgue function on infinite interval. I

Autori: Eneduanya, S. A. N.

Zdroj: Publicationes Mathematicae Debrecen. 31:235-241

Predmety: orthonormal polynomial, orthonormal Hermite polynomials, Lebesgue functions, weight function, Christoffel functions, Lagrange interpolation, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences, Interpolation in approximation theory, Laguere polynomials

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3905184
https://zbmath.org/4063755

The algebra $\mathcal{D}(W)$ via strong Darboux transformations: The algebra \(\mathcal{D}(W)\) via strong Darboux transformations

Autori: Bono Parisi, Ignacio Pacharoni, Ines

Predmety: matrix-valued orthogonal polynomials, Algebraic systems of matrices, Connections of hypergeometric functions with groups and algebras, and related topics, Mathematics - Rings and Algebras, matrix Bochner problem, discrete-continuous bispectrality, Matrix exponential and similar functions of matrices, Darboux transformations, matrix-valued bispectral functions, Mathematics - Classical Analysis and ODEs, Rings and Algebras (math.RA), 33C45, 42C05, 34L05, 34L10, Classical Analysis and ODEs (math.CA), FOS: Mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/abs/2403.03873

Simultaneous Approximation via Laplacians on the Unit Ball: Simultaneous approximation via Laplacians on the unit ball

Autori: Marriaga, Misael E. Pérez Fernández, Teresa Encarnación Recarte, Marlon J.

Zdroj: Digibug. Repositorio Institucional de la Universidad de Granada
Universidad de Granada (UGR)
BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
Universidad Rey Juan Carlos

Predmety: approximation on the ball, Fourier expansions, 0101 mathematics, Sobolev spaces and other spaces of ''smooth' functions, embedding theorems, trace theorems, inner product via Laplacians, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences, Approximation on the ball, Inner product via Laplacians

Popis súboru: application/pdf; application/xml

Prístupová URL adresa: https://hdl.handle.net/10115/85637
https://hdl.handle.net/10481/85368

Darboux transformations and the algebra $\mathcal{D}(W)$: Darboux transformations and the algebra \(\mathcal{D}(W)\)

Autori: Bono Parisi, Ignacio Pacharoni, Ines

Predmety: matrix-valued orthogonal polynomials, Mathematics - Operator Algebras, General theory of ordinary differential operators, Connections of hypergeometric functions with groups and algebras, and related topics, matrix Bochner problem, General spectral theory of ordinary differential operators, Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators, discrete-continuous bispectrality, Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), Matrix exponential and similar functions of matrices, Darboux transformations, matrix-valued bispectral functions, Mathematics - Classical Analysis and ODEs, 33C45, 42C05, 34L05, 34L10, Classical Analysis and ODEs (math.CA), FOS: Mathematics, Operator Algebras (math.OA), Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/abs/2311.16325
https://zbmath.org/7990854
https://doi.org/10.1016/j.laa.2025.01.002

The zeros of determinants of matrix-valued polynomials that are orthonormal on a semi-infinite or finite interval

Autori: Yu. M. Dyukarev

Zdroj: Sbornik: Mathematics. 209:1745-1755

Predmety: orthogonal matrix-valued polynomials, nonnegative matrix-valued measure, matrix moment problem, (Semi-) Fredholm operators, index theories, zeros of determinants of orthogonal matrix-valued polynomials, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, 01 natural sciences, Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones)

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/7025724
https://doi.org/10.1070/sm9004
http://ui.adsabs.harvard.edu/abs/2018SbMat.209.1745D/abstract

Symmetric contours and convergent interpolation

Autori: Yattselev, Maxim L. Mathematical Sciences, School of Science

Prispievatelia: Yattselev, Maxim L. Mathematical Sciences, School of Science

Zdroj: Journal of Approximation Theory. 225:76-105

Predmety: strong asymptotics, non-Hermitian orthogonality, 16. Peace & justice, 01 natural sciences, multipoint Padé approximation, Approximation by rational functions, Mathematics - Classical Analysis and ODEs, Classical Analysis and ODEs (math.CA), FOS: Mathematics, matrix Riemann-Hilbert approach, S-contours, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, Padé approximation, orthogonal polynomials

Popis súboru: application/xml; application/pdf

Prístupová URL adresa: http://arxiv.org/abs/1706.02811
https://dblp.uni-trier.de/db/journals/jat/jat225.html#Yattselev18
https://core.ac.uk/display/141923282
https://www.sciencedirect.com/science/article/pii/S0021904517301235
https://www.sciencedirect.com/science/article/pii/S0021904517301235#!
https://doi.org/10.1016/j.jat.2017.10.003

Matrix orthogonal polynomials associated with perturbations of block Toeplitz matrices

Autori: L. E. Garza Gaona A. E. Choque-Rivero

Zdroj: Russian Mathematics. 61:57-69

Predmety: Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), Toeplitz, Cauchy, and related matrices, Matrices over function rings in one or more variables, Toeplitz matrices, moment problem, unit circle, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, matrix orthogonal polynomials, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/6845964
https://doi.org/10.3103/s1066369x17120076
https://link.springer.com/article/10.3103/S1066369X17120076

CMV matrices, a matrix version of Baxter's theorem, scattering and de Branges spaces

Autori: Dym H Kimsey DP

Zdroj: EMS Surveys in Mathematical Sciences. 3:1-105

Predmety: Baxter's theorem, Linear operators in reproducing-kernel Hilbert spaces (including de Branges, de Branges-Rovnyak, and other structured spaces), de Branges spaces, Jacobi (tridiagonal) operators (matrices) and generalizations, matrix orthogonal polynomials, Nehari problem, 01 natural sciences, reproducing kernel Hilbert spaces, Schur parameters CMV matrices, Toeplitz operators, Hankel operators, Wiener-Hopf operators, Hilbert spaces with reproducing kernels (= (proper) functional Hilbert spaces, including de Branges-Rovnyak and other structured spaces), 0101 mathematics, scattering matrices, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, Linear operator methods in interpolation, moment and extension problems

Popis súboru: application/xml

Prístupová URL adresa: https://www.ems-ph.org/journals/show_pdf.php?issn=2308-2151&vol=3&iss=1&rank=1
https://eprints.ncl.ac.uk/223788
http://www.ems-ph.org/journals/show_abstract.php?issn=2308-2151&vol=3&iss=1&rank=1
https://www.ncl.ac.uk/library/linkit/?sv=e&d=223788
https://eprint.ncl.ac.uk/223788
http://www.ems-ph.org/doi/10.4171/EMSS/14

Do Orthogonal Polynomials Dream of Symmetric Curves?: Do orthogonal polynomials dream of symmetric curves?

Autori: E. A. Rakhmanov Andrei Martínez-Finkelshtein

Zdroj: Foundations of Computational Mathematics. 16:1697-1736

Predmety: non-Hermitian orthogonality, Potentials and capacity, harmonic measure, extremal length and related notions in two dimensions, quadratic differentials, 16. Peace & justice, 42C05, 26C10, 30C25, 31A15, 41A21, 01 natural sciences, Real polynomials: location of zeros, extremal problems, logarithmic potential theory, zero asymptotics, Mathematics - Classical Analysis and ODEs, equilibrium on the complex plane, critical measures, \(S\)-property, Classical Analysis and ODEs (math.CA), FOS: Mathematics, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, Padé approximation, Covering theorems in conformal mapping theory

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/pdf/1511.09175
http://arxiv.org/abs/1511.09175
https://zbmath.org/6679684
https://doi.org/10.1007/s10208-016-9313-0
https://dl.acm.org/doi/abs/10.1007/s10208-016-9313-0
http://ui.adsabs.harvard.edu/abs/2015arXiv151109175M/abstract
https://dblp.uni-trier.de/db/journals/focm/focm16.html#Martinez-Finkelshtein16
https://core.ac.uk/display/42659550
https://doi.org/10.1007/s10208-016-9313-0
https://link.springer.com/article/10.1007/s10208-016-9313-0

Orthogonal polynomials of equilibrium measures supported on Cantor sets

Autori: MANTICA, GIORGIO DOMENICO PIO

Zdroj: Journal of Computational and Applied Mathematics. 290:239-258

Predmety: Jacobi (tridiagonal) operators (matrices) and generalizations, Potentials and capacity, harmonic measure, extremal length and related notions in two dimensions, iterated function systems, FOS: Physical sciences, 42C05 (Primary) 31A15, 47B36, 81Q10, 30C30 (Secondary), 01 natural sciences, potential theory, FOS: Mathematics, Mathematics - Numerical Analysis, Complex Variables (math.CV), 0101 mathematics, Almost periodic Jacobi matrices, Conformal mapping, Equilibrium measure, Iterated Function systems, Orthogonal polynomials, Potential theory, Computational Mathematics, Applied Mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, orthogonal polynomials, Mathematical Physics, Selfadjoint operator theory in quantum theory, including spectral analysis, 2. Zero hunger, Quantum Physics, conformal mapping, Mathematics - Complex Variables, Numerical Analysis (math.NA), Mathematical Physics (math-ph), Schwarz-Christoffel-type mappings, almost periodic Jacobi matrices, Quantum Physics (quant-ph), equilibrium measure

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/abs/1311.4819
https://zbmath.org/6473779
https://doi.org/10.1016/j.cam.2015.05.014
https://arxiv.org/abs/1311.4819
http://ui.adsabs.harvard.edu/abs/2013arXiv1311.4819M/abstract
https://core.ac.uk/display/53563512
https://dialnet.unirioja.es/servlet/articulo?codigo=5282553
https://arxiv.org/pdf/1311.4819v1
https://dblp.uni-trier.de/db/journals/jcam/jcam290.html#Mantica15

Orthogonality of analytic polynomials: a little step further

Autori: Szafraniec, Franciszek

Zdroj: Journal of Computational and Applied Mathematics. 179:343-353

Predmety: Complex moment problem, subnormal operator, Positive definiteness, positive definiteness, Applied Mathematics, Recurrence relation, Subnormal operator, 01 natural sciences, Special classes of linear operators, Computational Mathematics, Hessenberg matrix, analytic polynomials, recurrence relation, complex moment problem, 0101 mathematics, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis, Linear operator methods in interpolation, moment and extension problems, Analytic polynomials

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/2173204
https://doi.org/10.1016/j.cam.2004.09.049
https://www.sciencedirect.com/science/article/abs/pii/S0377042704004583
https://www.sciencedirect.com/science/article/pii/S0377042704004583
https://core.ac.uk/display/82670422
http://ui.adsabs.harvard.edu/abs/2005JCoAM.179..343S/abstract
https://ruj.uj.edu.pl/xmlui/handle/item/82925