Results 1 to 10 of about 1,174 (70)

Deficiency indices of block Jacobi matrices and Miura transformation

open access: yesSpecial Matrices, 2022
We study the infinite Jacobi block matrices under the discrete Miura-type transformations which relate matrix Volterra and Toda lattice systems to each other and the situations when the deficiency indices of the corresponding operators are the same.
Osipov Andrey
doaj   +1 more source

Explicit Chebyshev Petrov–Galerkin scheme for time-fractional fourth-order uniform Euler–Bernoulli pinned–pinned beam equation

open access: yesNonlinear Engineering, 2023
In this research, a compact combination of Chebyshev polynomials is created and used as a spatial basis for the time fractional fourth-order Euler–Bernoulli pinned–pinned beam.
Moustafa Mohamed   +2 more
doaj   +1 more source

On the connection between tridiagonal matrices, Chebyshev polynomials, and Fibonacci numbers

open access: yesActa Universitatis Sapientiae: Mathematica, 2020
In this note, we recall several connections between the determinant of some tridiagonal matrices and the orthogonal polynomials allowing the relation between Chebyshev polynomials of second kind and Fibonacci numbers.
da Fonseca Carlos M.
doaj   +1 more source

Remarks to a theorem of Sinclair and Vaaler

open access: yes, 2020
Sinclair and Vaaler in [6] Theorem 1.2 found sufficient conditions, nonlinear in the coefficients depending on a parameter p 1 , for self-inversive polynomials to have all their zeros on the unit circle.
L. Losonczi
semanticscholar   +1 more source

Orthogonal polynomials for exponential weights x2α(1 – x2)2ρe–2Q(x) on [0, 1)

open access: yesOpen Mathematics, 2020
Let Wα,ρ = xα(1 – x2)ρe–Q(x), where α > –12$\begin{array}{} \displaystyle \frac12 \end{array}$ and Q is continuous and increasing on [0, 1), with limit ∞ at 1.
Liu Rong
doaj   +1 more source

Relations between the orthogonal matrix polynomials on [a, b], Dyukarev-Stieltjes parameters, and Schur complements

open access: yesSpecial Matrices, 2017
We obtain explicit interrelations between new Dyukarev-Stieltjes matrix parameters and orthogonal matrix polynomials on a finite interval [a, b], as well as the Schur complements of the block Hankel matrices constructed through the moments of the ...
Choque-Rivero A.E.
doaj   +1 more source

EIGENVALUE DECAY OF INTEGRAL OPERATORS GENERATED BY POWER SERIES-LIKE KERNELS

open access: yes, 2014
We deduce decay rates for eigenvalues of integral operators generated by power serieslike kernels on a subset X of either Rq or Cq . A power series-like kernel is a Mercer kernel having a series expansion based on an orthogonal family { fα}α∈Zq+ in L 2(X
D. Azevedo, V. Menegatto
semanticscholar   +1 more source

On generalized Laguerre matrix polynomials

open access: yesActa Universitatis Sapientiae: Mathematica, 2018
The main object of the present paper is to introduce and study the generalized Laguerre matrix polynomials for a matrix that satisfies an appropriate spectral property.
Batahan Raed S., Bathanya A. A.
doaj   +1 more source

CUBATURE FORMULA FOR THE GENERALIZED CHEBYSHEV TYPE POLYNOMIALS

open access: yes, 2017
We study cubature formulas to approximate double integrals of generalized Chebyshev-type polynomials of the second type, U (γ,M,N) n,r,d (U), over triangular domain.
Khaldoun M. AyyalSalman   +2 more
semanticscholar   +1 more source

Constrained ultraspherical-weighted orthogonal polynomials on triangle

open access: yes, 2015
We construct Ultraspherical-weighted orthogonal polynomials C (λ,γ) n,r (u, v, w), λ > − 2 , γ > −1, on the triangular domain T, where 2λ + γ = 1. We show C (λ,γ) n,r (u, v, w), r = 0, 1, . . .
Mohammad A. Alqudah
semanticscholar   +1 more source

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