Results 31 to 40 of about 1,331 (75)

Efficient scheme for a category of variable-order optimal control problems based on the sixth-kind Chebyshev polynomials

open access: yesDemonstratio Mathematica
The main goal of the present study is to introduce an operational collocation scheme based on sixth-kind Chebyshev polynomials (SCPs) to solve a category of optimal control problems involving a variable-order dynamical system (VODS). To achieve this goal,
Sadri Khadijeh   +5 more
doaj   +1 more source

Lost in translation [PDF]

open access: yesin "Advances in Combinatorics", Waterloo Workshop in Computer Algebra W80, Springer (2013), 287--293, 2012
We explain the use and set grounds about applicability of algebraic transformations of arithmetic hypergeometric series for proving Ramanujan's formulae for $1/\pi$ and their generalisations.
arxiv   +1 more source

Constant coefficient Laurent biorthogonal polynomials, Riordan arrays and moment sequences [PDF]

open access: yesarXiv, 2019
We study properties of constant coefficient Laurent biorthogonal polynomials using Riordan arrays. We give details of related orthogonal polynomials, and we explore relationships between the moments of these orthogonal polynomials, the moments of the defining Laurent biorthogonal polynomials, and the expansions of $T$-fractions. Closed form expressions
arxiv  

Remarks on orthogonal polynomials with respect to varying measures and related problems

open access: yes, 1992
International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 2, Page 255-258, 1993.
Xin Li
wiley   +1 more source

On the orthogonality and convolution orthogonality via the Kontorovich-Lebedev transform [PDF]

open access: yesarXiv, 2019
Notions of the orthogonality and convolution orthogonality are explored with the use of the Kontorovich-Lebedev transform and its convolution. New classes of the corresponding orthogonal polynomials and functions are investigated. Integral representations, orthogonality relations and explicit expressions are established.
arxiv  

Bivariate q-Laguerre–Appell polynomials and their applications

open access: yesApplied Mathematics in Science and Engineering
Recently, the monomiality principle has been extended to q-polynomials, namely, the q-monomiality principle of q-Appell polynomials has been considered.
Mohammed Fadel   +3 more
doaj   +1 more source

Fisher information of orthogonal polynomials I [PDF]

open access: yesarXiv, 2007
Following the lead of J. Dehesa and his collaborators, we compute the Fisher information of the Meixner-Pollaczek, Meixner, Krawtchouk and Charlier polynomials.
arxiv  

Polynomial solutions of nonlinear integral equations [PDF]

open access: yes, 2008
We analyze the polynomial solutions of a nonlinear integral equation, generalizing the work of C. Bender and E. Ben-Naim. We show that, in some cases, an orthogonal solution exists and we give its general form in terms of kernel polynomials.
arxiv   +1 more source

Certain properties and characterizations of a novel family of bivariate 2D-q Hermite polynomials

open access: yesOpen Mathematics
This study presents a novel family of bivariate 2D-qq Hermite polynomials. We derive explicit forms and qq-partial differential equations and investigate numerical aspects associated with these polynomials.
Wani Shahid Ahmad   +2 more
doaj   +1 more source

An urn model associated with the Jacobi polynomials [PDF]

open access: yesarXiv, 2009
We consider an urn model leading to a random walk that can be solved explicitly in terms of the well known Jacobi polynomials.
arxiv  

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