Results 31 to 40 of about 3,218 (198)

ELEMENTS: A high-order finite element library in C++

open access: yesSoftwareX, 2019
We discuss the creation and implementation of a generalized library, named ELEMENTS, of mathematical functions for supporting a very broad range of element types including: linear, quadratic, and cubic serendipity elements in 2D and 3D; high-order ...
Jacob L. Moore   +2 more
doaj   +1 more source

A study of generalized hypergeometric Matrix functions via two-parameter Mittag–Leffler matrix function

open access: yesOpen Physics, 2022
The main aim of this article is to study a new generalizations of the Gauss hypergeometric matrix and confluent hypergeometric matrix functions by using two-parameter Mittag–Leffler matrix function.
Jain Shilpi   +4 more
doaj   +1 more source

Matrix valued Jacobi polynomials

open access: yesBulletin des Sciences Mathématiques, 2003
The author finds a matrix valued weight for Jacobi orthogonal polynomials, which satisfy an explicit differential equation of Jabobi type. An application to spherical functions is discussed. The Bochner problem of finding all families of orthogonal polynomials that are eigenfunctions of some second order differential operator is considered.
openaire   +2 more sources

A New Inverse Eigenvalue Problem for Jacobi Matrices and Corresponding Mass-Spring System

open access: yesپژوهش‌های ریاضی, 2020
Introduction Many problems in sciences and engineering can be studied by mathematical models. These models are classified as direct problems and inverse problems.
Hanif Mirzaei
doaj  

Spectrum of Lyapunov exponents in non-smooth systems evaluated using orthogonal perturbation vectors

open access: yesMATEC Web of Conferences, 2018
This paper covers application of the novel method of Lyapunov exponents (LEs) spectrum estimation in non smooth mechanical systems. In the presented method, LEs are obtained from a Poincaré map.
Balcerzak Marek   +3 more
doaj   +1 more source

Block Jacobi matrices and Titchmarsh-Weyl function [PDF]

open access: yesOpuscula Mathematica
We collect some results and notions concerning generalizations for block Jacobi matrices of several concepts, which have been important for spectral studies of the simpler and better known scalar Jacobi case.
Marcin Moszyński, Grzegorz Świderski
doaj   +1 more source

The Computational Solution of Generalized Inverse Eigenvalue Problem for Pseudo-Jacobi Matrix

open access: yesJournal of Mathematics
This paper is concerned with two generalized inverse eigenvalue problems for a kind of pseudo-Jacobi matrix. From a non-Hermite matrix, an r×r Jacobi matrix, two distinct real eigenvalues, and part of the corresponding eigenvectors, an n×n pseudo-Jacobi ...
Fuxia Yi, Enhua Li
doaj   +1 more source

ON MATRIX SUMMABILITY OF JACOBI SERIES

open access: yesTamkang Journal of Mathematics, 1999
In this paper a new theorem on Matrix Summability of Jacobi series is established This theorem is a generalization of several known and unknown results.
openaire   +3 more sources

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

open access: yesAdvanced Science, EarlyView.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu   +9 more
wiley   +1 more source

Inversion of a tridiagonal jacobi matrix

open access: yesLinear Algebra and its Applications, 1994
The author develops a formula for the inverse of a general tridiagonal matrix in terms of principal minors.
openaire   +1 more source

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