Results 31 to 40 of about 119 (106)

Statistical Convergence for Grünwald–Letnikov Fractional Differences: Stability, Approximation, and Diagnostics in Fuzzy Normed Spaces

open access: yesAxioms
We present a unified framework for fuzzy statistical convergence of Grünwald–Letnikov (GL) fractional differences in Bag–Samanta fuzzy normed linear spaces, addressing memory effects and nonlocality inherent to fractional-order models.
Hasan Öğünmez   +1 more
doaj   +1 more source

Substitutions on compact alphabets

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 3, March 2025.
Abstract We develop a systematic approach to continuous substitutions on compact Hausdorff alphabets. Focussing on implications of irreducibility and primitivity, we highlight important features of the topological dynamics of their (generalised) subshifts.
Neil Mañibo, Dan Rust, James J. Walton
wiley   +1 more source

Ergodic averages along sequences of slow growth

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 3, March 2025.
Abstract We consider pointwise almost everywhere convergence of weighted ergodic averages along the sequence Ω(n)$ \Omega (n)$, where Ω(n)$ \Omega (n)$ denotes the number of prime factors of n$ n$ counted with multiplicities. It was previously shown that a pointwise ergodic theorem for L∞$L^\infty$ functions does not hold along Ω(n)$ \Omega (n)$.
Kaitlyn Loyd, Sovanlal Mondal
wiley   +1 more source

Outlier-Robust Convergence of Integer- and Fractional-Order Difference Operators in Fuzzy-Paranormed Spaces: Diagnostics and Engineering Applications

open access: yesFractal and Fractional
We develop a convergence framework for Grünwald–Letnikov (GL) fractional and classical integer difference operators acting on sequences in fuzzy-paranormed (fp) spaces, motivated by data that are imprecise and contain sporadic outliers.
Muhammed Recai Türkmen
doaj   +1 more source

A crucial active site network of titratable residues guides catalysis and NAD+ binding in human succinic semialdehyde dehydrogenase

open access: yesProtein Science, Volume 34, Issue 1, January 2025.
Abstract Human succinic semialdehyde dehydrogenase is a mitochondrial enzyme fundamental in the neurotransmitter γ‐aminobutyric acid catabolism. It catalyzes the NAD+‐dependent oxidative degradation of its derivative, succinic semialdehyde, to succinic acid.
Samuele Cesaro   +7 more
wiley   +1 more source

Almost Everywhere Convergence of Varying Parameter Setting Cesàro Means of Fourier Series With Respect to Walsh–Kaczmarz System

open access: yesAnnales Mathematicae Silesianae
In this paper, the almost everywhere convergence of Cesàro means of Walsh–Kaczmarz–Fourier series in a varying parameter setting is investigated. In particular, we define subsequence ℕαn,q{{\mathbb{N}}_{{{\alpha }_{n}},q}} of natural numbers and prove ...
Adimasu Anteneh Tilahun
doaj   +1 more source

Bootstrapping non‐stationary and irregular time series using singular spectral analysis

open access: yesJournal of Time Series Analysis, Volume 46, Issue 1, Page 81-112, January 2025.
This article investigates the consequences of using Singular Spectral Analysis (SSA) to construct a time series bootstrap. The bootstrap replications are obtained via a SSA decomposition obtained using rescaled trajectories (RT‐SSA), a procedure that is particularly useful in the analysis of time series that exhibit nonlinear, non‐stationary and ...
Don S. Poskitt
wiley   +1 more source

Strong Convergence of Weighted Sums for Negatively Orthant Dependent Random Variables [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2006
We discuss in this paper the strong convergence for weighted sums of negatively orthant dependent (NOD) random variables by generalized Gaussian techniques. As a corollary, a Cesaro law of large numbers of i.i.d.
doaj  

Feral ecologies of the human deep past: multispecies archaeology and palaeo‐synanthropy

open access: yesJournal of the Royal Anthropological Institute, Volume 30, Issue 4, Page 1062-1084, December 2024.
Abstract This article articulates recent advances in palaeo‐ecology with the goals and ambitions of multispecies archaeology. It centres the synanthropic nexus as a key context for the study of early human‐animal relationships and argues that its evolution yields important yet currently overlooked dynamics shaping the structure of the archaeological ...
Shumon T. Hussain
wiley   +1 more source

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