Results 21 to 30 of about 20,142 (264)

The Lie group Euler methods of multibody system dynamics with holonomic constraints

open access: yesAdvances in Mechanical Engineering, 2018
The Euler methods on Lie group are developed for the differential–algebraic equations of multibody system dynamics with holonomic constraints. The implicit Euler method is used to solve the differential–algebraic equations as Euler–Lagrange equations on ...
Jieyu Ding, Zhenkuan Pan
doaj   +1 more source

A New Development of the Classical Single Ladder Problem via Converting the Ladder to a Staircase

open access: yesMathematics, 2021
Our purpose is to shed some new light on problems arising from a study of the classical Single Ladder Problem (SLP). The basic idea is to convert the SLP to a corresponding Single Staircase Problem.
Ralph Høibakk   +3 more
doaj   +1 more source

Application of Reanalysis Methods in Structural Mechanics

open access: yesInternational Journal of Applied Mechanics and Engineering, 2022
When designing structures, it is often necessary to re-analyse a structure that is different in some parts from the original one. As real structures are often complex, their analysis is therefore very challenging.
I. Delyová   +4 more
doaj   +1 more source

On Riccati Equations in Banach Algebras [PDF]

open access: yesSIAM Journal on Control and Optimization, 2011
Let $R$ be a commutative complex Banach algebra with the involution $\cdot ^\star$ and suppose that $A\in R^{n\times n}$, $B\in R^{n\times m}$, $C\in R^{p\times n}$. The question of when the Riccati equation $$ PBB^\star P-PA-A^\star P-C^\star C=0 $$ has a solution $P\in R^{n\times n}$ is investigated.
Curtain, Ruth, Sasane, Amol
openaire   +3 more sources

Stochastic Runge–Kutta methods for multi-dimensional Itô stochastic differential algebraic equations

open access: yesResults in Applied Mathematics, 2021
In this paper, we discuss the numerical solutions to index 1 stochastic differential algebraic equations. We introduce a new class of weak second-order stochastic Runge–Kutta methods for finding the numerical approximate solutions to multi-dimensional ...
Priya Nair, Anandaraman Rathinasamy
doaj   +1 more source

Kleene Algebra with Equations [PDF]

open access: yes, 2014
We identify sufficient conditions for the construction of free language models for systems of Kleene algebra with additional equations. The construction applies to a broad class of extensions of KA and provides a uniform approach to deductive completeness.
Kozen, Dexter, Mamouras, Konstantinos
openaire   +1 more source

Differential equations for algebraic functions [PDF]

open access: yesProceedings of the 2007 international symposium on Symbolic and algebraic computation, 2007
It is classical that univariate algebraic functions satisfy linear differential equations with polynomial coefficients. Linear recurrences follow for the coefficients of their power series expansions. We show that the linear differential equation of minimal order has coefficients whose degree is cubic in the degree of the function.
Bostan, Alin   +4 more
openaire   +3 more sources

Algebraic Approach to Nonlinear Optimal Control Problems with Terminal Constraints: Sufficient Conditions for Existence of Algebraic Solutions

open access: yesSICE Journal of Control, Measurement, and System Integration, 2018
This paper studies nonlinear finite-horizon optimal control problems with terminal constraints, where all nonlinear functions are rational or algebraic functions.
Tomoyuki Iori   +2 more
doaj   +1 more source

Asymptotic integration of linear differential-algebraic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
This paper is concerned with the asymptotic behavior of solutions of linear differential-algebraic equations with asymptotically constant coefficients. Some results of asymptotic integration which are well known for ordinary differential equations (ODEs)
Vu Hoang Linh, Nguyen Tuan
doaj   +1 more source

Development of technique of Backward integration step-by-step for solve stiff initial value problems

open access: yesTikrit Journal of Pure Science, 2023
Our purpose in this paper is the development of the  technique of backward integration step-by-step, In order to facilitating the use of this technique for  solving  the Stiff Problems.
Khalid A. M. Khalaf, Bashir M. S. Khalaf
doaj   +1 more source

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