Results 21 to 30 of about 47,901 (262)

Solution of a class of nonlinear matrix equations

open access: yesLinear Algebra and its Applications, 2017
In this article we present several necessary and sufficient conditions for the existence of Hermitian positive definite solutions of nonlinear matrix equations of the form $X^s + A^*X^{-t}A + B^*X^{-p}B = Q$, where $ s, t, p \geq 1$, $ A, B$ are nonsingular matrices and $Q$ is a Hermitian positive definite matrix.
Snehasish Bose   +2 more
openaire   +3 more sources

A numerical scheme for solutions of a class of nonlinear differential equations

open access: yesJournal of Taibah University for Science, 2017
In this paper, a collocation method based on Bessel functions of the first kind is presented to compute the approximate solutions of a class of high-order nonlinear differential equations under the initial and boundary conditions. First, the matrix forms
Şuayip Yüzbaşı
doaj   +1 more source

Comment on “Perturbation Analysis of the Nonlinear Matrix Equation ” [PDF]

open access: yesAbstract and Applied Analysis, 2013
We show that the perturbation estimate for the matrix equation due to J. Li, is wrong. Our discussion is supported by a counterexample.
Maher Berzig, Erdal Karapınar
openaire   +2 more sources

An efficient method for vibration equations with time varying coefficients and nonlinearities

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
An efficient method for solving vibration equations is the basis of the vibration analysis of a cracked multistage blade–disk–shaft system. However, dynamic equations are usually time varying and nonlinear, and the time required for solving is greatly ...
Jinsong Yang   +3 more
doaj   +1 more source

Nonlinear renormalization group equation for matrix models [PDF]

open access: yesPhysics Letters B, 1993
12 pages, TIT/HEP-228, NUP-A-93-13 ( a few corrections in formulae, the conclusion not changed)
S. Higuchi   +3 more
openaire   +2 more sources

Numerical Solution of System of Nonlinear Integro-Differential Equations Using Hybrid of Legendre Polynomials and Block-Pulse Functions [PDF]

open access: yesMathematics Interdisciplinary Research, 2020
In this paper, numerical techniques are presented for solving system of nonlinear integro-differential equations. The method is implemented by applying hybrid of Legendre polynomials and Block-Pulse functions.
Mehdi Sabzevari, Fatemeh Molaei
doaj   +1 more source

The Matrix Kadomtsev­Petviashvili Equation as a Source of Integrable Nonlinear Equations [PDF]

open access: yesJournal of Nonlinear Mathematical Physics, 2002
arxiv version is already ...
openaire   +2 more sources

On the positive definite solutions of a nonlinear matrix equation [PDF]

open access: yes2012 4th Electronic System-Integration Technology Conference, 2012
In this paper, the nonlinear matrix equation is investigated. Based on the fixed-point theory, the boundary and the existence of the solution with the case are discussed. An algorithm that avoids matrix inversion with the case is proposed.
Ming Hui Wang   +2 more
openaire   +1 more source

On a Nonlinear Matrix Equation Arising in Nano Research

open access: yesSIAM Journal on Matrix Analysis and Applications, 2012
The matrix equation $X+A^{T}X^{-1}A=Q$ arises in Green's function calculations in nano research, where $A$ is a real square matrix and $Q$ is a real symmetric matrix dependent on a parameter and is usually indefinite. In practice one is mainly interested in those values of the parameter for which the matrix equation has no stabilizing solutions.
Chun-Hua Guo   +2 more
openaire   +2 more sources

Common Fixed-Point Results in Ordered Left (Right) Quasi-b-Metric Spaces and Applications

open access: yesJournal of Mathematics, 2020
We use the notions of left- and right-complete quasi-b-metric spaces and partial ordered sets to obtain a couple of common fixed-point results for strictly weakly isotone increasing mappings and relatively weakly increasing mappings, which satisfy a pair
Hemant Kumar Nashine   +4 more
doaj   +1 more source

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