Results 41 to 50 of about 3,838,636 (215)

Implicit first order differential systems with nonlocal conditions

Electronic Journal of Qualitative Theory of Differential Equations, 2015
The present paper is devoted to the existence of solutions for implicit first order differential systems with nonlocal conditions expressed by continuous linear functionals. The lack of complete continuity of the associated integral operators, due to the
Octavia Bolojan (Nica), Radu Precup
doaj   +1 more source

Conditional model order estimation [PDF]

IEEE Transactions on Signal Processing, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

A class of explicit second derivative general linear methods for non-stiff ODEs

Mathematical Modelling and Analysis
In this paper, we construct explicit second derivative general linear methods (SGLMs) with quadratic stability and a large region of absolute stability for the numerical solution of non-stiff ODEs.
Mohammad Sharifi, Ali Abdi, Michal Braś, Gholamreza Hojjati   +3 more
doaj   +1 more source

Second order systems with nonlinear nonlocal boundary conditions

Electronic Journal of Qualitative Theory of Differential Equations, 2018
This paper is concerned with the second order differential equation with not necessarily linear nonlocal boundary condition. The existence of solutions is obtained using the properties of the Leray–Schauder degree. The results generalize and improve some
Jean Mawhin, Bogdan Przeradzki, Katarzyna Szymanska-Debowska   +2 more
doaj   +1 more source

Stabilization of a fractional-order chain of integrators: a contraction-based approach [PDF]

, 2013
In this paper, stabilization of a chain of fractional-order integrators is attempted. The stability is proved using contraction analysis.
SPURGEON, S, Spurgeon, Sarah K., Kamal, S., KAMAL, S, BANDYOPADHYAY, B, Bandyopadhyay, B., Spurgeon, S., Bandyopadhyay, Bijan, Kamal, Shyam   +8 more
core   +1 more source

Explicit Runge–Kutta–Nyström-Type Schemes for Fourth-Order Systems y⁽⁴⁾=f (x, y, y^′)

Axioms
This work addresses the numerical solution of fourth-order initial value problems of the form y(4)=f(x,y,y′), extending the capabilities of standard Runge–Kutta–Nyström (RKN) methods which are typically limited to y(4)=f(x,y). Problems of this type arise
Rubayyi T. Alqahtani, Theodore E. Simos, Charalampos Tsitouras   +2 more
doaj   +1 more source

First order impulsive differential inclusions with periodic conditions

Electronic Journal of Qualitative Theory of Differential Equations, 2008
In this paper, we present an impulsive version of Filippov's Theorem for the first-order nonresonance impulsive differential inclusion $$ \begin{array}{rlll} y'(t)-\lambda y(t) &\in& F(t,y(t)), &\hbox{ a.e. } \, t\in J\backslash \{t_{1},\ldots,t_{m}\},\\
John Graef, Abdelghani Ouahab
doaj   +1 more source

Coefficient Conditions for Starlikeness of Nonnegative Order

Abstract and Applied Analysis, 2012
Sufficient conditions on a sequence {ak} of nonnegative numbers are obtained that ensures f(z)=∑k=1∞akzk is starlike of nonnegative order in the unit disk. A result of Vietoris on trigonometric sums is extended in this pursuit.
Rosihan M. Ali, See Keong Lee, Saiful R. Mondal   +2 more
doaj   +1 more source

Singular Higher-Order Complete Vector Bases for Finite Methods [PDF]

, 2004
This paper presents new singular curl- and divergence- conforming vector bases that incorporate the edge conditions. Singular bases complete to arbitrarily high order are described in a unified and consistent manner for curved triangular and ...
Graglia, Roberto, Lombardi, Guido
core   +1 more source

An Efficiently Parallelized High-Order Aeroacoustics Solver Using a Characteristic-Based Multi-Block Interface Treatment and Optimized Compact Finite Differencing

Aerospace, 2017
This paper presents the development of a fourth-order finite difference computational aeroacoustics solver. The solver works with a structured multi-block grid domain strategy, and it has been parallelized efficiently by using an interface treatment ...
Bidur Khanal, Alistair Saddington, Kevin Knowles   +2 more
doaj   +1 more source