Results 21 to 30 of about 3,264 (278)

On the q-Charlier Multiple Orthogonal Polynomials [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2015
We introduce a new family of special functions, namely $q$-Charlier multiple orthogonal polynomials. These polynomials are orthogonal with respect to $q$-analogues of Poisson distributions. We focus our attention on their structural properties. Raising and lowering operators as well as Rodrigues-type formulas are obtained. An explicit representation in
Arves??, J., Ram??rez-Aberasturis, A.M.
openaire   +4 more sources

Multiple Meixner Polynomials on a Non-Uniform Lattice

open access: yesMathematics, 2020
We consider two families of type II multiple orthogonal polynomials. Each family has orthogonality conditions with respect to a discrete vector measure.
Jorge Arvesú   +1 more
doaj   +1 more source

Application of uncertainty design optimization based on polynomial chaos expansions and maximum entropy method in ship design

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThe key to uncertainty design optimization (UDO) is uncertainty quantification (UQ), but the traditionally used Monte Carlo (MC) method can be time-consuming and computationally expensive.
Xiao WEI, Heng LI, Chenran HUANG
doaj   +1 more source

Global fluctuations for Multiple Orthogonal Polynomial Ensembles

open access: yesJournal of Functional Analysis, 2021
We study the fluctuations of linear statistics with polynomial test functions for Multiple Orthogonal Polynomial Ensembles. Multiple Orthogonal Polynomial Ensembles form an important class of determinantal point processes that include random matrix models such as the GUE with external source, complex Wishart matrices, multi-matrix models and others ...
Maurice Duits   +2 more
openaire   +2 more sources

Multiple Orthogonal Polynomials on the Unit Circle

open access: greenConstructive Approximation, 2007
We introduce multiple orthogonal polynomials on the unit circle. We show how this is related to simultaneous rational approximation to Caratheodory functions (two-point Hermite-Pade approximation near zero and near infinity). We give a Riemann-Hilbert problem for which the solution is in terms of type I and type II multiple orthogonal polynomials on ...
Judit Mínguez Ceniceros   +1 more
openalex   +4 more sources

The Symmetrization Problem for Multiple Orthogonal Polynomials [PDF]

open access: yes, 2021
We analyze the effect of symmetrization in the theory of multiple orthogonal polynomials. For a symmetric sequence of type II multiple orthogonal polynomials satisfying a high-term recurrence relation, we fully characterize the Weyl function associated to the corresponding block Jacobi matrix as well as the Stieltjes matrix function.
Branquinho, Amílcar   +1 more
openaire   +2 more sources

Multiple Askey–Wilson polynomials and related basic hypergeometric multiple orthogonal polynomials

open access: yesTransactions of the American Mathematical Society, 2020
We first show how one can obtain Al-Salam--Chihara polynomials, continuous dual $q$-Hahn polynomials, and Askey--Wilson polynomials from the little $q$-Laguerre and the little $q$-Jacobi polynomials by using special transformations. This procedure is then extended to obtain multiple Askey--Wilson, multiple continuous dual $q$-Hahn, and multiple Al ...
Nuwacu, Jean Paul, Van Assche, Walter
openaire   +3 more sources

Biomedical Multimedia Encryption by Fractional-Order Meixner Polynomials Map and Quaternion Fractional-Order Meixner Moments

open access: yesIEEE Access, 2022
Chaotic systems are widely used in signal and image encryption schemes. Therefore, the design of new chaotic systems is always useful for improving the performance of encryption schemes in terms of security. In this work, we first demonstrate the chaotic
Achraf Daoui   +6 more
doaj   +1 more source

Multiple orthogonal polynomials, 𝑑-orthogonal polynomials, production matrices, and branched continued fractions

open access: goldTransactions of the American Mathematical Society, Series B
I analyze an unexpected connection between multiple orthogonal polynomials, d d -orthogonal polynomials, production matrices and branched continued fractions. This work can be viewed as a partial extension of Viennot’s combinatorial theory of orthogonal polynomials to the case where the production matrix is lower-Hessenberg but is not ...
Alan D. Sokal
openalex   +4 more sources

Mach-Zehnder Interferometer Sensor Curvature Demodulation Method Based on the Orthogonal Decomposition of Spectral Curves

open access: yesIEEE Access, 2020
This paper proposes a curvature demodulation of Mach-Zehnder interferometer (MZI) sensors based on complete spectral information. An MZI sensor composed of two waist-enlarged single mode fibers (SMFs) was fabricated.
Mingyao Liu   +9 more
doaj   +1 more source

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