Results 1 to 10 of about 140,310 (283)

Generalized Quasi-Orthogonal Functional Networks Applied in Parameter Sensitivity Analysis of Complex Dynamical Systems

open access: yesElektronika ir Elektrotechnika, 2022
This paper presents one possible application of generalized quasi-orthogonal functional networks in the sensitivity analysis of complex dynamical systems.
Sasa S. Nikolic   +6 more
doaj   +1 more source

On Robust Stability for Hurwitz Polynomials via Recurrence Relations and Linear Combinations of Orthogonal Polynomials

open access: yesComplexity, 2022
In this contribution, we use the connection between stable polynomials and orthogonal polynomials on the real line to construct sequences of Hurwitz polynomials that are robustly stable in terms of several uncertain parameters.
Alejandro Arceo   +4 more
doaj   +1 more source

Some New Families of Finite Orthogonal Polynomials in Two Variables

open access: yesAxioms, 2023
In this paper, we generalize the study of finite sequences of orthogonal polynomials from one to two variables. In doing so, twenty three new classes of bivariate finite orthogonal polynomials are presented, obtained from the product of a finite and an ...
Esra Güldoğan Lekesiz, Iván Area
doaj   +1 more source

Fourier Transform of the Orthogonal Polynomials on the Unit Ball and Continuous Hahn Polynomials

open access: yesAxioms, 2022
Some systems of univariate orthogonal polynomials can be mapped into other families by the Fourier transform. The most-studied example is related to the Hermite functions, which are eigenfunctions of the Fourier transform.
Esra Güldoğan Lekesiz   +2 more
doaj   +1 more source

A Note on Bi-Orthogonal Polynomials and Functions

open access: yesFluids, 2020
The theory of orthogonal polynomials is well established and detailed, covering a wide field of interesting results, as, in particular, for solving certain differential equations.
Clemente Cesarano
doaj   +1 more source

On Differential Equations Associated with Perturbations of Orthogonal Polynomials on the Unit Circle

open access: yesMathematics, 2020
In this contribution, we propose an algorithm to compute holonomic second-order differential equations satisfied by some families of orthogonal polynomials.
Lino G. Garza   +2 more
doaj   +1 more source

The Stenger conjectures and the A-stability of collocation Runge-Kutta methods

open access: yesJournal of Inequalities and Applications, 2023
Stenger conjectures are claims about the location of the eigenvalues of matrices whose elements are certain integrals involving basic Lagrange interpolating polynomials supported on the zeros of orthogonal polynomials. In this paper, we show the validity
Rachid Ait-Haddou, Hoda Alselami
doaj   +1 more source

Equivalences of the Multi-Indexed Orthogonal Polynomials [PDF]

open access: yes, 2013
Multi-indexed orthogonal polynomials describe eigenfunctions of exactly solvable shape-invariant quantum mechanical systems in one dimension obtained by the method of virtual states deletion.
Odake, Satoru
core   +3 more sources

Orthogonal Polynomials on the Unit Ball and Fourth-Order Partial Differential Equations [PDF]

open access: yes, 2016
The purpose of this work is to analyse a family of mutually orthogonal polynomials on the unit ball with respect to an inner product which includes an additional term on the sphere.
Martínez, Clotilde, Piñar, Miguel A.
core   +3 more sources

Krylov complexity and orthogonal polynomials

open access: yesNuclear Physics B, 2022
Krylov complexity measures operator growth with respect to a basis, which is adapted to the Heisenberg time evolution. The construction of that basis relies on the Lanczos algorithm, also known as the recursion method.
Wolfgang Mück, Yi Yang
doaj   +1 more source

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