Results 41 to 50 of about 999 (56)

Superelliptic Affine Lie algebras and orthogonal polynomials

open access: yesForum of Mathematics, Sigma
We construct two families of orthogonal polynomials associated with the universal central extensions of the superelliptic Lie algebras. These polynomials satisfy certain fourth-order linear differential equations, and one of the families is a particular ...
Felipe Albino dos Santos   +2 more
doaj   +1 more source

Direct and Inverse Spectral Problems for (2N + 1)-Diagonal, Complex, Symmetric, Non-Hermitian Matrices [PDF]

open access: yes, 2004
2000 Mathematics Subject Classification: 42C05.We give an easy procedure for solving of the direct and the inverse spectral problems for the equation. Guseynov used a procedure of the Gelfand-Levitan type for the case N = 1.
Zagorodnyuk, S.
core  

Convexity of the zeros of some orthogonal polynomials and related functions

open access: yes, 2008
We study convexity properties of the zeros of some special functions that follow from the convexity theorem of Sturm. We prove results on the intervals of convexity for the zeros of Laguerre, Jacobi and ultraspherical polynomials, as well as functions ...
Ahmed   +17 more
core   +1 more source

On associated polynomials and decay rates for birth-death processes [PDF]

open access: yes, 2001
We consider sequences of orthogonal polynomials and pursue the question of how (partial) knowledge of the orthogonalizing measure for the {\it associated polynomials} can lead to information about the orthogonalizing measure for the original polynomials.
Doorn, E.A. van
core   +2 more sources

Spectral properties of unbounded Jacobi matrices with almost monotonic weights

open access: yes, 2015
We present an unified framework to identify spectra of Jacobi matrices. We give applications to long-standing conjecture of Chihara concerning one-quarter class of orthogonal polynomials, to the conjecture posed by Roehner and Valent concerning ...
Świderski, Grzegorz
core   +1 more source

Spectral measures with arbitrary Hausdorff dimensions

open access: yes, 2014
In this paper, we consider spectral properties of Riesz product measures supported on homogeneous Cantor sets and we show the existence of spectral measures with arbitrary Hausdorff dimensions, including non-atomic zero-dimensional spectral measures and ...
Dai, Xin-Rong, Sun, Qiyu
core   +1 more source

Universality at an Endpoint for Orthogonal Polynomials with Geronimus-Type Weights

open access: yes, 2017
We provide a new closed form expression for the Geronimus polynomials on the unit circle and use it to obtain new results and formulas. Among our results is a universality result at an endpoint of an arc for polynomials orthogonal with respect to a ...
Simanek, Brian
core   +1 more source

Integral representations for a generalized Hermite linear functional

open access: yes, 2008
In this paper we find new integral representations for the {\it generalized Hermite linear functional} in the real line and the complex plane.
Costas-Santos, R. S., Sfaxi, Ridha
core  

Spectra of Self-Similar Measures. [PDF]

open access: yesEntropy (Basel), 2022
Cao YS, Deng QR, Li MT.
europepmc   +1 more source

On Weyl multipliers of non-overlapping Franklin polynomial systems

open access: yes, 2020
We prove that $\log n$ is an almost everywhere convergence Weyl multiplier for any orthonormal system of non-overlapping Franklin polynomials.
Karagulyan, Grigori A.
core  

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