Results 21 to 30 of about 95 (36)

Stepanov-like pseudo-almost automorphic solutions of infinite class in the alpha-norm under the light of measure theory

open access: yesNonautonomous Dynamical Systems
In this article, we study weighted Stepanov-like pseudo-almost automorphic functions with infinite delay using measure theory. We present a new concept of weighted ergodic functions, which is more general than the classical one.
Mbainadji Djendode   +2 more
doaj   +1 more source

Trigonal curves and algebro-geometric solutions to soliton hierarchies

open access: yes, 2016
Using linear combinations of Lax matrices of soliton hierarchies, we introduce trigonal curves by their characteristic equations, and determine Dubrovin type equations for zeros and poles of meromorphic functions defined as ratios of the Baker-Akhiezer ...
Ma, Wen-Xiu
core   +1 more source

Tensor-based numerical method for stochastic homogenisation

open access: yes, 2018
This paper addresses the complexity reduction of stochastic homogenisation of a class of random materials for a stationary diffusion equation. A cost-efficient approximation of the correctors is built using a method designed to exploit quasi-periodicity.
Ayoul-Guilmard, Quentin   +2 more
core   +2 more sources

Square-mean almost automorphic mild solutions to some stochastic differential equations in a Hilbert space

open access: yesAdvances in Difference Equations, 2011
This article deals primarily with the existence and uniqueness of square-mean almost automorphic mild solutions for a class of stochastic differential equations in a real separable Hilbert space.
N'Guérékata Gaston   +2 more
doaj  

Almost periodic pseudodifferential operators and Gevrey classes

open access: yes, 2011
We study almost periodic pseudodifferential operators acting on almost periodic functions $G_{\rm ap}^s(\rr d)$ of Gevrey regularity index $s \geq 1$. We prove that almost periodic operators with symbols of H\"ormander type $S_{\rho,\delta}^m$ satisfying
Oliaro, Alessandro   +2 more
core   +1 more source

KAM for the quantum harmonic oscillator

open access: yes, 2011
In this paper we prove an abstract KAM theorem for infinite dimensional Hamiltonians systems. This result extends previous works of S.B. Kuksin and J. P\"oschel and uses recent techniques of H. Eliasson and S.B. Kuksin.
B. Grébert   +20 more
core   +2 more sources

Asymptotic periodic solutions of differential equations with infinite delay

open access: yes, 2023
In this paper, by using the spectral theory of functions and properties of evolution semigroups, we establish conditions on the existence, and uniqueness of asymptotic 1-periodic solutions to a class of abstract differential equations with infinite delay
Huy, Nguyen Duc   +3 more
core  

Convergence in Comparable Almost Periodic Reaction-Diffusion Systems with Dirichlet Boundary Condition

open access: yes, 2013
The paper is to study the asymptotic dynamics in nonmonotone comparable almost periodic reaction-diffusion system with Dirichlet boundary condition, which is comparable with uniformly stable strongly order-preserving system. By appealing to the theory of
Cao, Feng, Fu, Yelai
core   +1 more source

Soliton interaction with small Toeplitz potentials for the Szego equation on the real line

open access: yes, 2011
We consider the cubic Szego equation perturbed by a small Toeplitz potential (natural generalization of a multiplicative potential) and having as initial condition a soliton of the unperturbed equation.
Pocovnicu, Oana
core   +1 more source

The EHTA for Two Shallow Water Wave Equations [PDF]

open access: yes, 2011
In this paper, two shallow water wave equations are studied by using the extended homoclinic test approach (EHTA). The new exact solutions for the shallow water wave equations are obtained.
Defei Zhang, Ping He, Wei Li
core  

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