Results 71 to 80 of about 3,049,692 (344)

Computation of H-infinity norm of linear discrete-time periodic systems [PDF]

, 2006
We propose an efficient an numerically reliable procedure for the computation of H-infinity norm of discrete-time linear periodic systems. The new procedure is general being applicable to both standard as well as descriptor periodic systems with time ...
Varga, Andreas
core  

Asymptotically almost periodic and almost periodic solutions for a class of evolution equations

Electronic Journal of Differential Equations, 2004
In this paper we study the existence of asymptotically almost periodic and almost periodic solutions for the partial evolution equation $$ frac{d}{dt} (x(t)+g(t,x(t))=Ax(t)+f(t,Bx(t)), $$ where $A$ is the infinitesimal generator of an analytic semigroup ...
Eduardo Hernandez M., Mauricio L. Pelicer, Jose P. C. Dos Santos   +2 more
doaj  

Almost periodic solutions for Abel equations

International Journal of Mathematics and Mathematical Sciences, 1997
Using the Liapunov function method, the existence of almost periodic solutions of a scalar differential equation is discussed The results for the scalar differential equation are then applied to prove the existence and stability of almost periodic ...
Zeng Weiyao, Shi Jinlin, Lin Zhensheng, Lokenath Debnath   +3 more
doaj   +1 more source

Discontinuous generalized double-almost-periodic functions on almost-complete-closed time scales

Boundary Value Problems, 2019
In this paper, we introduce the concept of almost-complete-closed time scales (ACCTS) that allows independent variables of functions to possess almost-periodicity under translations.
Chao Wang, Ravi P. Agarwal, Donal O’Regan, Rathinasamy Sakthivel   +3 more
doaj   +1 more source

Impact of Metastatic Patterns on Survival and Response to Therapy in Neuroblastoma

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background While the presence of metastases in neuroblastoma (NB) is a well‐established prognostic factor, the clinical significance of dissemination patterns and tumour burden and their impact on response and survival remains poorly understood.
Mariona Morell‐Daniel, Santiago Pérez‐Hoyos, Aroa Soriano, Ana Coma, Amalia Varo, Raquel Hladun, Gabriela Guillén, Soraya Mico, Marta Garrido, Lourdes Rubio, Alba Rubio‐San‐Simón, Ana Minguez, Ricardo López‐Almaraz, Laura Illade, Miguel F. Segura, Lucas Moreno   +15 more
wiley   +1 more source

Existence of pseudo almost periodic solutions for a class of partial functional differential equations

Electronic Journal of Differential Equations, 2013
In this paper, we first introduce a new class of pseudo almost periodic type functions and investigate some properties of pseudo almost periodic type functions; and then we discuss the existence of pseudo almost periodic solutions to the class of ...
Hui-Sheng Ding, Wei Long, Gaston M. N'Guerekata"   +2 more
doaj  

Existence of bounded solutions for retarded equations with infinite delay, impulses, and nonlocal condition

NOVASINERGIA, 2020
In this work, we study the existence of bounded solutions for a semilinear retarded equation with infinite delay, impulse, and non-local conditions. We also show that under some conditions this bounded solution is unique, periodic, or almost periodic ...
Génesis Carrillo, Carlos Chipantiza, Hugo Leiva   +2 more
doaj   +1 more source

Existence and Stability of Almost Periodic Solutions in Almost Periodic Systems

Publications of the Research Institute for Mathematical Sciences, 1976
where x$ are real, k is a positive integer and a^(f) are almost periodic functions of t. Under some conditions on ##(£), Theorem 1 shows that the trivial solution of the first approximation of system (1-1) is uniformly asymptotically stable in a subspace IT of R (see Definition 2) .
openaire   +2 more sources

Almost periodicity of solutions for almost periodic evolution equations

Differential and Integral Equations, 2005
In this paper, we discuss almost periodicity of solutions for evolution equations in Banach space. We introduce the concept of difference-variation equation. For a special Hilbert space, we establish some results on almost periodicity of all solutions for evolution equations. In particular, we extend Haraux's result on $R^2$ to $R^n.$
Hu, Zuosheng, Mingarelli, Angelo B.
openaire   +2 more sources

Weakly almost periodic flows [PDF]

Transactions of the American Mathematical Society, 1989
The notion of the enveloping semigroup of a flow is applied to some situations in ergodic theory. In particular, weakly almost periodic functions on groups are studied and Moore’s ergodic theorem is proved.
Ellis, R., Nerurkar, M.
openaire   +2 more sources