Results 81 to 90 of about 164,877 (270)

Variational electrodynamics of Atoms

, 2013
We generalize Wheeler-Feynman electrodynamics by the minimization of a finite action functional defined for variational trajectories that are required to merge continuously into given past and future boundary segments.
De Luca, Jayme
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Periodic solutions for some partial neutral functional differential equations

Electronic Journal of Differential Equations, 2006
In this work, we study the existence of periodic solutions for partial neutral functional differential equation. We assume that the linear part is not necessarily densely defined and satisfies the Hille-Yosida condition.
Rachid Benkhalti, Abdelhai Elazzouzi, Khalil Ezzinbi   +2 more
doaj  

Oscillation of Solutions of Neutral Partial Functional Differential Equations

Journal of Mathematical Analysis and Applications, 1999
The authors use the generalized Riccati transformation in order to obtain sufficient conditions for an oscillation of the solutions to the following neutral partial differential-functional equations \[ {\partial \over \partial t}\left[p(t) {\partial\over\partial t}\left(u(x,t)+ \sum^\ell_{i=1} \lambda_i(t) u(x,t-\tau_i) \right)\right] = \] \[ =a(t ...
Bao Tong Cui, Wei Nian Li
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Про структуру множини неперервно диференційовних розв'язків однієї граничної задачі для системи диференціально-функціональних рівнянь нейтрального типу [PDF]

, 2007
Исследуется структура множества непрерывно дифференцируемых при t принадлежит R+ = [0;+∞) решений одной предельной задачи для систем нелинейных дифференциально-функциональных уравнений нелинейного типа с нелинейными отклонениями аргумента, зависящих от ...
Вельгач, А.В., Пелюх, Г.П.   +1 more
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Variational Methods and Almost Periodic Solutions Of Second Order Functional Differential Equations With Infinite Delay

, 2010
International audienceBy means of variational methods, we study the existence and uniqueness of almost periodic solutions for a class of second order neutral functional differential equations with infinite ...
Ayachi, Moez
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Збіжність у схемі усереднення диференціально-функціональних рівнянь нейтрального типу [PDF]

, 2013
Розглянуто достатнi умови збiжностi за ймовiрнiстю випадкових процесiв, що описуються диференцiально-функцiональними рiвняннями нейтрального типу з випадковими операторами.
Малик, І.В.
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Oscillation results for even-order quasilinear neutral functional differential equations

Electronic Journal of Differential Equations, 2011
In this article, we use the Riccati transformation technique and some inequalities, to establish oscillation theorems for all solutions to even-order quasilinear neutral differential equation $$ Big(ig[ig(x(t)+p(t)x(au(t))ig)^{(n-1)}ig]^gammaBig)' +
Blanka Baculikova, Jozef Dzurina, Tongxing Li   +2 more
doaj  

Controllability of nonlocal second-order impulsive neutral stochastic functional integro-differential equations with delay and Poisson jumps

Cogent Engineering, 2015
The current paper is concerned with the controllability of nonlocal second-order impulsive neutral stochastic functional integro-differential equations with infinite delay and Poisson jumps in Hilbert spaces.
Diem Dang Huan, Hongjun Gao
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Exponential Ordering for Nonautonomous Neutral Functional Differential Equations

SIAM Journal on Mathematical Analysis, 2009
Comment: 29 pages.
Novo, Sylvia, Obaya, Rafael, Villarragut, Víctor M.   +2 more
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Almost automorphic solutions of discrete delayed neutral system

, 2015
We study almost automorphic solutions of the discrete delayed neutral dynamic system% \[ x(t+1)=A(t)x(t)+\Delta Q(t,x(t-g(t)))+G(t,x(t),x(t-g(t))) \] by means of a fixed point theorem due to Krasnoselskii.
Adıvar, Murat, Koyuncuoglu, H. Can
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