Results 41 to 50 of about 818,934 (319)

On discrete analogues of nonlinear implicit differential equations

open access: yesAdvances in Difference Equations, 2006
This paper deals with some classes of nonlinear implicit difference equations obtained via discretization of nonlinear differential-algebraic or partial differential-algebraic equations.
Anh Pham Ky, Loi Le Cong
doaj   +2 more sources

Symbolic Analysis for Boundary Problems: From Rewriting to Parametrized Groebner Bases [PDF]

open access: yes, 2012
We review our algebraic framework for linear boundary problems (concentrating on ordinary differential equations). Its starting point is an appropriate algebraization of the domain of functions, which we have named integro-differential algebras.
Buchberger, Bruno   +3 more
core   +1 more source

Problem for differential-algebraic equations with a significant loads

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
In this article, the problem for a differential-algebraic equation with a significant loads is studied. Unlike previously studied problems for differential equations with a significant loads, in the considered equation, there is a matrix in the left ...
A.T. Assanova   +3 more
doaj   +1 more source

Modeling and PDC fuzzy control of planar parallel robot

open access: yesInternational Journal of Advanced Robotic Systems, 2017
Many works in the literature have studied the kinematical and dynamical issues of parallel robots. But it is still difficult to extend the vast control strategies to parallel mechanisms due to the complexity of the model-based control. This complexity is
Benyamine Allouche   +3 more
doaj   +1 more source

Earthquake dynamic response of large flexible multibody systems [PDF]

open access: yesMechanical Sciences, 2013
In the paper dynamics of large flexible structures imposed on earthquakes and high amplitude vibrations is regarded. Precise dynamic equations of flexible systems are the basis for reliable motion simulation and analysis of loading of the design scheme ...
E. V. Zahariev
doaj   +1 more source

A Game—Theoretic Model for a Stochastic Linear Quadratic Tracking Problem

open access: yesAxioms, 2023
In this paper, we solve a stochastic linear quadratic tracking problem. The controlled dynamical system is modeled by a system of linear Itô differential equations subject to jump Markov perturbations.
Vasile Drăgan   +2 more
doaj   +1 more source

Least-squares collocation for higher-index linear differential-algebraic equations: Estimating the instability threshold

open access: yesMathematics of Computation, 2018
Differential-algebraic equations with higher-index give rise to essentially ill-posed problems. The overdetermined least-squares collocation for differential-algebraic equations which has been prop ...
M. Hanke, R. März, C. Tischendorf
semanticscholar   +1 more source

Localized direct boundary–domain integro–differential formulations for scalar nonlinear boundary-value problems with variable coefficients [PDF]

open access: yes, 2005
Mixed boundary-value Problems (BVPs) for a second-order quasi-linear elliptic partial differential equation with variable coefficients dependent on the unknown solution and its gradient are considered.
Mikhailov, SE
core   +1 more source

Linear matrix differential-algebraic boundary-value problem in the case of parametric resonance

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
We construct necessary and sufficient conditions for the existence of solution of linear boundary value problem for a parametric excitation system of differential-algebraic equations.
С. М. Чуйко, Д. В. Сисоєв
doaj   +1 more source

Algebraic Analysis of Key Recovery on ZORRO Iterative Differential Characteristics [PDF]

open access: yesJisuanji gongcheng, 2017
This paper analyzes ZORRO with algebraic method in detail according to its iterative characteristic of the round function.The encryption iterates 5 times based on 4-round differential characteristics to form 20-round differential characteristics,and then
LI Mengzhu,ZHANG Wenying,CHEN Wanpu
doaj   +1 more source

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