Results 11 to 20 of about 3,398,742 (244)

Fields of almost periodic sequences [PDF]

open access: yesJournal of Combinatorial Theory, Series A, 1977
AbstractLet F((x)) be the field of formal power series over the field with two elements F. We classify all quadratic elements in F((x)) which are almost periodic, the Morse-Hedlund sequence being a special case. We also give some results for higher-degree almost periodic elements.
Leonard E. Baum   +3 more
openaire   +2 more sources

Almost periodic type solutions of differential equations with piecewise constant argument via almost periodic type sequences [PDF]

open access: yesApplied Mathematics Letters, 2000
The aim of this paper is to characterize the existence of almost-periodic, asymptotically almost-periodic, and pseudo almost-periodic solutions to differential equations with piecewise constant argument of the form: \[ {dx\over dt}= f(t, x(t), x([t]), x([t- 1]),\dots, x([t- k])),\quad t\in J,\tag{1} \] where \(k\) is a positive integer, \(f\in C(J ...
A. I. Alonso, Jialin Hong, Rafael Obaya
openaire   +3 more sources

Uniformly almost periodic weighted sequences.

open access: yes, 1965
Professer A.P. Guinand introduces and develops in his paper, "Concordance and the Harmonic Analysis of Sequences" [3], the concept of an almost periodic weighted sequence. [...]
Henniger, James Perry.
openaire   +2 more sources

Remotely $c$-almost periodic type functions in ${\mathbb{R}}^{n}$

open access: yes, 2022
summary:In this paper, we relate the notions of remote almost periodicity and quasi-asymptotical almost periodicity; in actual fact, we observe that a remotely almost periodic function is nothing else but a bounded, uniformly continuous quasi ...
Kostić, Marco, Kumar, Vipin
core   +2 more sources

Structure of Fourier exponents of almost periodic functions and periodicity of almost periodic functions [PDF]

open access: yes, 1996
summary:The paper deals with almost periodic functions which are limits of sequences of continuous periodic functions, and determines the structure of their Fourier exponents and their ranges.
Fischer, Alexandr
core   +3 more sources

Rotation sets and almost periodic sequences [PDF]

open access: yesMathematische Zeitschrift, 2016
We study the rotational behaviour on minimal sets of torus homeomorphisms and show that the associated rotation sets can be any type of line segments as well as non-convex and even plane-separating continua. This shows that restrictions holding for rotation sets on the whole torus are not valid on minimal sets.
Jäger, T., Passeggi, A., Štimac, Sonja
openaire   +6 more sources

Vector-valued pseudo almost periodic functions [PDF]

open access: yes, 1997
summary:Vector-valued pseudo almost periodic functions are defined and their properties are investigated. The vector-valued functions contain many known functions as special cases.
Zhang, Chuanyi
core   +1 more source

Almost periodic sequences and functions with given values [PDF]

open access: yes, 2011
summary:We present a method for constructing almost periodic sequences and functions with values in a metric space. Applying this method, we find almost periodic sequences and functions with prescribed values.
Veselý, Michal
core   +1 more source

Further properties of Stepanov--Orlicz almost periodic functions [PDF]

open access: yes, 2020
summary:We revisit the concept of Stepanov--Orlicz almost periodic functions introduced by Hillmann in terms of Bochner transform. Some structural properties of these functions are investigated.
Boulahia, Fatiha   +2 more
core   +1 more source

Some Remarks on Almost Periodic Sequences and Languages

open access: yesCoRR, 2022
Reconstructed source file of a paper originally published in 1995 in a volume currently without an online version (and with limited availability). Uploaded in order to ensure the online availability (and preservation) of the paper. This version faithfully reproduces the original, except for the addition of a note about the solution of Open Problem 3 ...
openaire   +2 more sources

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