Results 211 to 220 of about 164,877 (270)

Normal Forms for Partial Neutral Functional Differential Equations with Applications to Diffusive Lossless Transmission Line

International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 2020
A class of partial neutral functional differential equations are considered. For the linearized equation, the semigroup properties and formal adjoint theory are established.
Chuncheng Wang
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Existence results for impulsive delayed neutral stochastic functional differential equations with noncompact semigroup

Stochastics, 2021
In this paper, we study the existence of mild solutions for impulsive neutral stochastic functional differential equations driven by a fractional Brownian motion with noncompact semigroup and varying-time delays in a Hilbert space.
Dongdong Gao, Jianli Li
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Kneser-type oscillation theorems for second-order functional differential equations with unbounded neutral coefficients

Mathematica Slovaca
In this paper, we initiate the study of asymptotic and oscillatory properties of solutions to second-order functional differential equations with noncanonical operators and unbounded neutral coefficients, using a recent method of iteratively improved ...
I. Jadlovská, G. Chatzarakis, E. Tunç
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Averaging of neutral stochastic partial functional differential equations involving delayed impulses

Applicable Analysis, 2021
In this paper, we initiate a study on averaging principles for neutral stochastic partial functional differential equations (NSPFDEs) with delayed impulses. With the aid of inequality techniques, the semigroup approach and some technical transformations,
Jiankang Liu, Wei Xu, Qin Guo
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Stability of neutral-type functional differential equations [PDF]

Nonlinear Analysis: Theory, Methods & Applications, 1982
In this chapter we give some methods for investigating the stability of various classes of NDEs.
V.B. Kolmanovsky, V.R. Nosov
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Oscillation of Neutral Functional Differential Equations

Acta Mathematica Hungarica, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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OSCILLATIONS OF NEUTRAL FUNCTIONAL DIFFERENTIAL EQUATIONS

Acta Mathematica Scientia, 1992
This paper presents sufficient conditions for all the solutions of some classes of neutral functional differential equations (NFDE) to oscillate. Under consideration are (i) a class of NFDE of retarded type \[ [x(t)- px(t-\tau)]'+\sum^ n_{i=1}q_ ix(t-\sigma_ i)=0, \tag{1} \] where \(p\geq 0\), \(\tau\), \(q_ i\) and the \(\sigma_ i\) are positive ...
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Stabilization of neutral functional differential equations

Journal of Optimization Theory and Applications, 1976
In this paper, we prove a necessary and sufficient condition for feedback stabilization of neutral functional differential equations.
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Spline Approximations for Neutral Functional Differential Equations

SIAM Journal on Numerical Analysis, 1981
Based on an abstract approximation theorem for ${\text{C}}_0 $-semigroups (Trotter–Kato theorem) we present an algorithm where linear autonomous functional-differential equations of neutral type are approximated by sequences of ordinary differential equations of increasing dimensions.
Karl Kunisch, Franz Kappel
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PERIODIC SOLUTIONS OF NEUTRAL FUNCTIONAL DIFFERENTIAL EQUATIONS

Acta Mathematica Scientia, 2001
The problem of periodic solutions for nonlinear neutral functional-differential equations \[ \frac{d}{dt}D(t, x_t)=f(t,x_t) \] is discussed by using coincidence degree theory. A new result on the existence of periodic solutions is obtained.
Siming Zhu, Shiguo Peng
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