Results 41 to 50 of about 889,087 (322)

Numerical Simulation of Chemical Propulsion Systems: Survey and Fundamental Mathematical Modeling Approach

open access: yesAerospace, 2023
This study deals with the mathematical modeling and numerical simulation of chemical propulsion systems (CPSs). For this, we investigate and summarize a comprehensive collection of the simulation modeling developments of CPSs in academic works ...
Jihyoung Cha
doaj   +1 more source

Nonsmooth differential-algebraic equations in chemical engineering

open access: yesComputers and Chemical Engineering, 2017
This article advocates a nonsmooth differential-algebraic equations (DAEs) modeling paradigm for dynamic simulation and optimization of process operations.
Peter G. Stechlinski   +2 more
semanticscholar   +1 more source

Nonlinear differential equations and algebraic systems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1978
In this paper we obtain the general solution of scalar, first-order differential equations. The method is variation of parameters with asymptotic series and the theory of partial differential equations.
Lloyd K. Williams
doaj   +1 more source

Differential Equations for Algebraic Functions [PDF]

open access: yes, 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.
Bostan, Alin   +4 more
core   +9 more sources

Free integro-differential algebras and Groebner-Shirshov bases [PDF]

open access: yes, 2014
The notion of commutative integro-differential algebra was introduced for the algebraic study of boundary problems for linear ordinary differential equations. Its noncommutative analog achieves a similar purpose for linear systems of such equations.
Gao, Xing, Guo, Li, Rosenkranz, Markus
core   +3 more sources

Small-Signal Stability Analysis for Non-Index 1 Hessenberg Form Systems of Delay Differential-Algebraic Equations

open access: yesIEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2016
This paper focuses on the small-signal stability analysis of systems modelled as differential-algebraic equations and with inclusions of delays in both differential equations and algebraic constraints.
F. Milano, I. Dassios
semanticscholar   +1 more source

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

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

Pseudotransient Continuation and Differential-Algebraic Equations [PDF]

open access: yesSIAM Journal on Scientific Computing, 2003
The authors present a globally convergent method for semi-explicit index-1 differential-algebraic equations (DAEs) given by an iteration procedure. Pseudotransient continuation is a practical technique for globalizing the computation of steady-state solutions of nonlinear differential equations and is applied here to DAEs.
Coffey, Todd S.   +2 more
openaire   +2 more sources

On algebraic differential equations concerning the Riemann-zeta function and the Euler-gamma function [PDF]

open access: yesComplex Variables and Elliptic Equations, 2020
In this paper, we prove that ζ is not a solution of any non-trivial algebraic differential equation whose coefficients are polynomials in over the ring of polynomials in , are nonnegative integers.
Qiongyan Wang, Z. Li, Man-Li Liu, Nan Li
semanticscholar   +1 more source

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