Results 51 to 60 of about 801 (162)

Asymptotic Properties for a General Class of Szász–Mirakjan–Durrmeyer Operators

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 2, Page 734-743, 30 January 2026.
ABSTRACT In this paper, we introduce a general family of Szász–Mirakjan–Durrmeyer type operators depending on an integer parameter j∈ℤ$$ j\in \mathbb{Z} $$. They can be viewed as a generalization of the Szász–Mirakjan–Durrmeyer operators, Phillips operators, and corresponding Kantorovich modifications of higher order.
Ulrich Abel   +3 more
wiley   +1 more source

Quenched Invariance Principle for the Random Walk on the Penrose Tiling [PDF]

open access: yes, 2014
We consider the simple random walk on the graph corresponding to a Penrose tiling. We prove that the path distribution of the walk converges weakly to that of a non-degenerate Brownian motion for almost every Penrose tiling with respect to the ...
Bartha, Zs., Telcs, A.
core  

Nuclear pseudo-differential operators in Besov spaces on compact Lie groups

open access: yes, 2017
In this work we establish the metric approximation property for Besov spaces defined on arbitrary compact Lie groups. As a consequence of this fact, we investigate trace formulae for nuclear Fourier multipliers on Besov spaces.
Cardona Sanchez, Duvan
core   +1 more source

Superdiffusion in the periodic Lorentz gas [PDF]

open access: yes, 2015
We prove a superdiffusive central limit theorem for the displacement of a test particle in the periodic Lorentz gas in the limit of large times $t$ and low scatterer densities (Boltzmann-Grad limit). The normalization factor is $\sqrt{t\log t}$, where $t$
Marklof, Jens, Toth, Balint A
core   +4 more sources

On the Reducibility of Weighted Composition Operators Generated by Periodic Transformations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.
In this article, we study the reducibility of weighted composition operators (also known as weighted displacement operators) acting on Banach spaces of continuous functions on a compact topological space X. We consider operators of the form Bu(x) = a(x)u(α(x)), where α : X⟶X is a continuous mapping and a is a continuous function.
Teube Cyrille Mbainaissem   +3 more
wiley   +1 more source

Dunkl generalization of Phillips operators and approximation in weighted spaces

open access: yesAdvances in Difference Equations, 2020
The purpose of this article is to introduce a modification of Phillips operators on the interval [ 1 2 , ∞ ) $[ \frac{1}{2},\infty ) $ via a Dunkl generalization. We further define the Stancu type generalization of these operators as S n , υ ∗ ( f ; x ) =
M. Mursaleen   +3 more
doaj   +1 more source

Intermittent quasistatic dynamical systems: weak convergence of fluctuations [PDF]

open access: yes, 2018
This paper is about statistical properties of quasistatic dynamical systems. These are a class of non-stationary systems that model situations where the dynamics change very slowly over time due to external influences. We focus on the case where the time-
Leppänen, Juho
core   +3 more sources

Weighted Korovkin‐Type Theorem and Some Properties of Szász–Mirakjan Operators Preserving Exponential Functions via Power Series Statistical Convergence

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
In this article, we establish a weighted Korovkin‐type approximation theorem within the framework of power series statistical convergence and provide a systematic extension of classical Korovkin theory to weighted function spaces. Furthermore, we investigate the approximation properties of the Szász–Mirakjan operators preserving exponential functions ...
Dilek Söylemez, Feras Yousef
wiley   +1 more source

Promises of change: Envisioning new lives in partner abuse intervention programs

open access: yesCriminology, Volume 63, Issue 4, Page 845-883, November 2025.
Abstract How do interventions with violent offenders instill a desire for change? This article uses the case of partner abuse intervention to examine the discourses and subjectivities that emerge in intervention programs, as well as their potential impact on desistance from violence.
Marie Laperrière
wiley   +1 more source

Central limit theorems with a rate of convergence for time-dependent intermittent maps

open access: yes, 2020
We study dynamical systems arising as time-dependent compositions of Pomeau-Manneville-type intermittent maps. We establish central limit theorems for appropriately scaled and centered Birkhoff-like partial sums, with estimates on the rate of convergence.
Hella, Olli, Leppänen, Juho
core   +2 more sources

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