Results 21 to 30 of about 1,450,703 (382)

On ψ Bounded Solutions for a Nonlinear Lyapunov Matrix Differential Equation on 𝕉

open access: yesAnnals of West University of Timisoara - Mathematics and Computer Science, 2018
Using Banach and Schauder - Tychono fixed point theorems, existence results for a nonlinear Lyapunov matrix differential equation on 𝕉 are given. The obtained results generalize and extend the results from [5] and [18].
A. Diamandescu
semanticscholar   +1 more source

The Solution Space of the Unitary Matrix Model String Equation and the Sato Grassmannian [PDF]

open access: yes, 1991
The space of all solutions to the string equation of the symmetric unitary one-matrix model is determined. It is shown that the string equation is equivalent to simple conditions on points $V_1$ and $V_2$ in the big cell $\Gr$ of the Sato Grassmannian ...
A. Schwarz   +40 more
core   +5 more sources

Improvement of the nullspace matrix method of differential equation type for motion analysis of multibody systems

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In a previous report, the author presented a motion analysis method for rigid multibody systems, called nullspace matrix method of differential equation type.
Keisuke KAMIYA
doaj   +1 more source

An Efficient Numerical Scheme for Solving Multiorder Tempered Fractional Differential Equations via Operational Matrix

open access: yesJournal of Mathematics, 2022
In this paper, we extend the operational matrix method to solve the tempered fractional differential equation, via shifted Legendre polynomial. Although the operational matrix method is widely used in solving various fractional calculus problems, it is ...
Abiodun Ezekiel Owoyemi   +2 more
doaj   +1 more source

Weakly nonlinear boundary value problem for a matrix differential equation

open access: yes, 2016
We set forth solvability conditions and construction of the generalized Green operator for Noetherian linear boundary value problem for the matrix differential equations and solvability conditions and the constructive scheme for constructing solutions of
S. Chuiko
semanticscholar   +1 more source

PT-Symmetric, Quasi-Exactly Solvable matrix Hamiltonians [PDF]

open access: yes, 2007
Matrix quasi exactly solvable operators are considered and new conditions are determined to test whether a matrix differential operator possesses one or several finite dimensional invariant vector spaces.
Ancilla Nininahazwe   +8 more
core   +2 more sources

NONLINEAR EQUATION WITH THE THIRD ORDER SCATTERING OPERATOR

open access: yesНаука. Инновации. Технологии, 2022
Introduction: most of the differential equations associated with soliton mathematics are obtained using the Lax operator equation or the zero-curvature equation, which are the compatibility condition for a pair of linear differential systems. The case in
Olga Sergeevna Yanovskaya   +1 more
doaj  

A Liapunov functional for a matrix neutral difference-differential equation with one delay [PDF]

open access: yes, 1917
For the matrix neutral difference-differential equation ẋ(t) + Aẋ(t − τ)  Bx(t) + Cx(t − τ) we construct a quadratic Liapunov functional which gives necessary and sufficient conditions for the asymptotic stability of the solutions of that equation. We
Fukuchi, N.   +6 more
core   +1 more source

Reverse generalized Bessel matrix differential equation, polynomial solutions, and their properties

open access: yes, 2015
This paper is devoted to the study of reverse generalized Bessel matrix polynomials (RGBMPs) within complex analysis. This study is assumed to be a generalization and improvement of the scalar case into the matrix setting.
M. Abul-dahab   +3 more
semanticscholar   +1 more source

Convergence of a Low-Rank Lie-Trotter Splitting for Stiff Matrix Differential Equations [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2018
We propose a numerical integrator for determining low-rank approximations to solutions of large-scale matrix differential equations. The considered differential equations are semilinear and stiff.
A. Ostermann, Chiara Piazzola, H. Walach
semanticscholar   +1 more source

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