Results 101 to 110 of about 2,861,683 (201)

Learning to learn by using nonequilibrium training protocols for adaptable materials. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Falk MJ   +7 more
europepmc   +1 more source

Nonoscillatory Solutions of x(m) = (-1)mQ(t)x

open access: yes, 1979
A continuous real vector function is said to be nonoscillatory on an interval if at least one of its components is of constant positive or negative sign there. In this note, various existence criteria for nonoscillatory solutions of the system x(m) = (-l)
Sui-Sun Cheng
core   +1 more source

On Nonoscillation of Advanced Differential Equations with Several Terms

open access: yesAbstract and Applied Analysis, 2011
Existence of positive solutions for advanced equations with several terms x˙(t)+∑k=1mak(t)x(hk(t))=0,  hk(t)≥t is investigated in the following three cases: (a) all coefficients ak are positive; (b) all coefficients ak are negative; (c) there is an equal
L. Berezansky, E. Braverman
doaj   +1 more source

On the oscillation of the solutions to linear difference equations with variable delay

open access: yesElectronic Journal of Differential Equations, 2008
A new criterion for the oscillation of the solutions to linear difference equations with variable delay is established. This criterion is based on a new fundamental lemma, which provides a useful inequality for the nonoscillatory solutions of the ...
Christos G. Philos   +2 more
doaj  

Oscillations of Numerical Solutions for Nonlinear Delay Differential Equations in the Control of Erythropoiesis

open access: yesDiscrete Dynamics in Nature and Society, 2013
We consider the oscillations of numerical solutions for the nonlinear delay differential equations in the control of erythropoiesis. The exponential θ-method is constructed and some conditions under which the numerical solutions oscillate are presented ...
Qi Wang, Jiechang Wen
doaj   +1 more source

On third-order linear difference equations involving quasi-differences

open access: yesAdvances in Difference Equations, 2006
We study the third-order linear difference equation with quasi-differences and its adjoint equation. The main results of the paper describe relationships between the oscillatory and nonoscillatory solutions of both equations.
Došlá Zuzana, Kobza Aleš
doaj   +2 more sources

On Second-Order Differential Equations with Nonhomogeneous Φ-Laplacian

open access: yesBoundary Value Problems, 2010
Equation with general nonhomogeneous Φ-Laplacian, including classical and singular Φ-Laplacian, is investigated. Necessary and sufficient conditions for the existence of nonoscillatory solutions satisfying certain asymptotic boundary ...
Mariella Cecchi   +2 more
doaj   +1 more source

On oscillatory and nonoscillatory behaviour of solutions of Volterra integral equations

open access: yes, 1983
Sufficient conditions are given so that bounded and unbounded solutions of the Volterra integral equation x(t) = ƒ(t) − ∝0t a(t, s) g(s, x(s)) ds are oscillatory or nonoscillatory.
Parhi, N., Misra, Niyati
core   +1 more source

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