Results 31 to 40 of about 46,438 (258)

Investigation of the saturation pulse artifact in non-enhanced MR angiography of the lower extremity arteries at 7 Tesla. [PDF]

open access: yesPLoS ONE, 2015
When performing non-enhanced time-of-flight MR angiography of the lower extremity arteries at 7 T with cardiac triggering, the acquisition time is a crucial consideration.
Sören Johst   +5 more
doaj   +1 more source

Asymptotic Almost-Periodicity for a Class of Weyl-Like Fractional Difference Equations

open access: yesMathematics, 2019
This work deal with asymptotic almost-periodicity of mild solutions for a class of difference equations with a Weyl-like fractional difference in Banach space.
Junfei Cao, Amar Debbouche, Yong Zhou
doaj   +1 more source

Loomis Type Theorem for Bounded Sequences

open access: yesAxioms
This paper extends Loomis’s classical spectral criterion for almost periodic functions to bounded sequences in discrete settings. We first establish a discrete Kadets-type theorem for bounded sequences by regarding almost periodic functions as continuous
Yuan-Yuan Chen   +2 more
doaj   +1 more source

On T-Characterized Subgroups of Compact Abelian Groups

open access: yesAxioms, 2015
A sequence \(\{ u_n \}_{n\in \omega}\) in abstract additively-written Abelian group \(G\) is called a \(T\)-sequence if there is a Hausdorff group topology on \(G\) relative to which \(\lim_n u_n =0\).
Saak Gabriyelyan
doaj   +1 more source

Rigorous results for aperiodic and almost periodic substitution sequences [PDF]

open access: yesBrazilian Journal of Physics, 2000
Recent studies of the effects of geometric fluctuations, associated with aperiodic exchange inter-actions, on the critical behavior of ferromagnetic Ising models on hierarchical lattices, were the motivation to investigate some properties of two-letter sequences generated by uniform substitutions.
Pinho, S. T. R., Lobão, T. C. Petit
openaire   +3 more sources

On almost sure asymptotic periodicity for scalar stochastic difference equations

open access: yesAdvances in Difference Equations, 2017
We consider a perturbed linear stochastic difference equation 1 X ( n + 1 ) = a ( n ) X ( n ) + g ( n ) + σ ( n ) ξ ( n + 1 ) , n = 0 , 1 , … , X 0 ∈ R , $$ X(n+1)=a(n)X(n)+g(n)+\sigma(n)\xi(n+1), \quad n=0, 1, \dots, \qquad X_{0}\in\mathbb{R}, $$ with ...
Alexandra Rodkina, Eeva Rapoo
doaj   +1 more source

Attosecond photoelectron spectroscopy of helium doubly excited states

open access: yesPhysical Review Research, 2023
We describe a numerical method that simulates the interaction of the helium atom with sequences of femtosecond and attosecond light pulses. The method, which is based on the close-coupling expansion of the electronic configuration space in a B-spline ...
Luca Argenti, Eva Lindroth
doaj   +1 more source

Rationally almost periodic sequences, polynomial multiple recurrence and symbolic dynamics [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2018
A set$R\subset \mathbb{N}$is calledrationalif it is well approximable by finite unions of arithmetic progressions, meaning that for every$\unicode[STIX]{x1D716}>0$there exists a set$B=\bigcup _{i=1}^{r}a_{i}\mathbb{N}+b_{i}$, where$a_{1},\ldots ,a_{r},b_{1},\ldots ,b_{r}\in \mathbb{N}$, such that$$\begin{eqnarray}\overline{d}(R\triangle B):=\limsup ...
Bergelson, V.   +3 more
openaire   +2 more sources

Immunoglobulin Depletion and Recovery Following Blinatumomab in Infants With KMT2A‐Rearranged ALL

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Adding blinatumomab to standard chemotherapy for infants with KMT2A‐rearranged acute B‐cell lymphoblastic leukemia (KMT2A‐r B‐ALL) improves outcomes. Although blinatumomab impairs immunoglobulin G (lgG) production, increasing infection susceptibility, IgG recovery remains poorly understood.
Miguel Vieira Martins   +14 more
wiley   +1 more source

APPROXIMATION OF CONJUGATE PERIODIC FUNCTIONS BY THEIR THREE-HARMONIC POISSON INTEGRALS

open access: yesМіжнародний науково-технічний журнал "Проблеми керування та інформатики", 2020
Asymptotic equalities are obtained for the upper bounds of deviations of the three-harmonic Poisson integrals from functions  conjugated to functions from the Hölder classes   in the uniform metric.
У.З. Грабова
doaj   +1 more source

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