Results 71 to 80 of about 10,897,824 (131)

O método de Riemann-Hilbert aplicado à teoria de polinómios ortogonais [PDF]

, 2011
Doutoramento em MatemáticaFCT (MCTES); FSEPOPH ...
Sousa, Vítor Luís Pereira Morais de
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A Riemann–Hilbert approach to asymptotic questions for orthogonal polynomials [PDF]

, 2001
A few years ago the authors introduced a new approach to study asymptotic questions for orthogonal polynomials. In this paper we give an overview of our method and review the results which have been obtained in Deift et al. (Internat. Math. Res. Notices (
K.T.-R. McLaughlin, P. Deift, T. Kriecherbauer, Kriecherbauer, T., S. Venakides, McLaughlin, K.T.-R., Venakides, S., X. Zhou, Deift, P., Zhou, X.   +9 more
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Riemann-Hilbert problems, Toeplitz operators and ergosurfaces

Journal of High Energy Physics
The Riemann-Hilbert approach, in conjunction with the canonical Wiener-Hopf factorisation of certain matrix functions called monodromy matrices, enables one to obtain explicit solutions to the non-linear field equations of some gravitational theories ...
M. Cristina Câmara, Gabriel Lopes Cardoso   +1 more
doaj   +1 more source

Fractional Inner Products and Orthogonal Polynomial Structures: A Riemann-Liouville Framework for Spectral Approximation

Axioms
This paper develops an operator-oriented framework for spectral approximation in fractional calculus by introducing a fractional inner product defined through the Riemann-Liouville integral. Instead of modifying polynomial families, the proposed approach
Muath Awadalla, Dalal Alhwikem
doaj   +1 more source

Bragg grating based integrated photonic Hilbert transformers

, 2013
Planar Bragg grating based photonic Hilbert transformers are experimentally demonstrated in this work. Planar Bragg gratings are utilized to implement a general Hilbert transform, a fractional order Hilbert transform and terahertz bandwidth Hilbert ...
Smith, P.G.R., Sima, C., J. C. Gates, Chaotan Sima, M. N. Zervas, Gates, J.C., P. G. R. Smith, Zervas, M.N.   +7 more
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Problemas de Riemann-Hilbert

, 2009
O estudo da obtenção de fórmulas assintóticas para polinômios ortogonais clássicos foi amplamente desenvolvido por Szegö. Recentemente, a necessidade de obtenção de assintóticas para polinômios, ortogonais com respeito a funções peso variadas, foi ...
Félix, Heron Martins
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Diagonalization of the finite Hilbert transform on two adjacent intervals: the Riemann-Hilbert approach. [PDF]

Anal Math Phys, 2020
Bertola M, Blackstone E, Katsevich A, Tovbis A.   +3 more
europepmc   +1 more source

Riemann-Hilbert problems for multiple orthogonal polynomials [PDF]

, 2001
In the early nineties, Fokas, Its and Kitaev observed that there is a natural Riemann-Hilbert problem (for 2x2 matrix functions) associated which a system of orthogonal polynomials. This Riemann-Hilbert problem was later used by Deift et al.
Kuijlaars, Arno, Geronimo, Jeffrey S., Van Assche, Walter   +2 more
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Emergent Random Matrix Universality in Quantum Operator Dynamics

Physical Review X
The high complexity of many-body quantum dynamics means that essentially all analytical or numerical approaches either exploit special structure or are approximate in nature.
Oliver Lunt, Thomas Kriecherbauer, Kenneth T-R McLaughlin, Curt von Keyserlingk   +3 more
doaj   +1 more source

Uma generalização da Integral de Riemann [PDF]

, 1999
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Matemática e Computação Científica.Neste trabalho, estudamos uma modificação da Integral de Riemann, a Integral ...
Pereira, Maria Elita
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