Results 231 to 240 of about 908,104 (274)

How to Improve the Reliability of Aperiodic Parameter Estimates in M/EEG: A Method Comparison. [PDF]

open access: yesPsychophysiology
Kałamała P   +6 more
europepmc   +1 more source

Almost-Periodic Multipliers

Acta Applicandae Mathematica, 2001
Let \((\sigma_m(x))_{m\in\mathbb{N}}\) be the sequence of Bochner sums of the generalized trigonometric series \[ \sum_{\lambda\in\Lambda} a_\lambda e^{i\lambda x},\tag{\(*\)} \] where the spectrum \(\Lambda\) is a countable set in \(\mathbb{R}\). Among else it is shown \((*)\) is the Bohr-Fourier series of a function \(f\) in the space \(S^p(\mathbb{R}
Bruno, Giordano   +2 more
openaire   +2 more sources

Stepanov Almost Periodically Correlated and Almost Periodically Unitary Processes

Theory of Probability & Its Applications, 1997
Summary: This paper extends the structure and properties of almost periodically correlated (APC) and almost periodically unitary (APU) processes, which are defined in the sense of Bohr, to a larger class of processes for which the sense of almost periodicity is that of Stepanov.
Hurd, H. L., Russek, A.
openaire   +2 more sources

Almost Periodic Solutions for Stepanov-Almost Periodic Differential Equations

Differential Equations and Dynamical Systems, 2013
The paper considers the following differential equations in a Banach space \[ \displaylines{u^{(n)}(t) = Au(t) + f(t)\;,\;u^{(n)}(t) = Au(t) + f(t,u(t))\cr u'(t) = Au(t) + f(t)\;,\;u'(t) = Au(t) + f(t,u(t))} \] with \(A\) either a bounded linear operator or the infinitesimal generator of an exponentially stable continuous semigroup; \(f:\mathbb{R ...
Maqbul, Md., Bahuguna, D.
openaire   +1 more source

Holomorphic Almost-Periodic Functions

Acta Applicandae Mathematica, 2001
This is a survey paper concerning results on holomorphic almost-periodic functions and mappings in one and several complex variables, up today, with special attention payed to the achievements of the Kharkov school. There are presented results concerning almost-periodic distributions and currents, a.p. holomorphic chains and divisors, extension of a.p.
Favorov, S. Yu., Rashkovskii, A. Yu.
openaire   +2 more sources

Minimally Almost Periodic Groups

The Annals of Mathematics, 1940
Given a group g it is of some interest to decide which elements of g can be “told apart” by almost periodic functions of g or, which is the same thing (cf. below) by finite dimensional bounded linear representations of g. That is: For two a, b ∈ g we define a ~ b by either of these two properties: (I) For every almost periodic function f(x) in g
von Neumann, J., Wigner, Eugene P.
openaire   +2 more sources

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