Results 21 to 30 of about 1,100,944 (211)

Uniform Convergence and Spectra of Operators in a Class of Fréchet Spaces

open access: yesAbstract and Applied Analysis, 2014
Well-known Banach space results (e.g., due to J. Koliha and Y. Katznelson/L. Tzafriri), which relate conditions on the spectrum of a bounded operator T to the operator norm convergence of certain sequences of operators generated by T, are extended to ...
Angela A. Albanese   +2 more
doaj   +1 more source

Concrete functors that respect initiality and finality

open access: yesApplied General Topology, 2023
We study concrete endofunctors of the category of convergence spaces and continuous maps that send initial maps to initial maps or final maps to final maps. The former phenomenon turns out to be fairly common while the latter is rare.
Frédéric Mynard
doaj   +1 more source

ℐ𝒦-SEQUENTIAL AND ℐ𝒦-FRÉCHET-URYSOHN SPACES

open access: yesПроблемы анализа
Notions of ℐ^𝒦-Fréchet-Urysohn and ℐ^𝒦-sequential spaces are studied by letting ideals ℐ, 𝒦 of subsets of natural numbers to play measurable role in the well-established concepts of Fréchet Urysohn and sequential spaces. Relation among those spaces in
Sima Roy, Manoranjan Singha
doaj   +1 more source

Generalized quasivariational inequalities on Fréchet spaces [PDF]

open access: yes, 1999
summary:In this paper generalized quasivariational inequalities on Fréchet spaces are deduced from new fixed point theory of Agarwal and O’Regan [1] and O’Regan [7]
O'Regan, Donal
core   +1 more source

Controllability of mild solutions for fractional neutral evolution equations with state-dependent delay [PDF]

open access: yesArchives of Control Sciences
This paper examines the controllability of mild solutions for a specific class of neutral fractional evolution equations with finite state-dependent delays in Fréchet space, employing Caputo fractional derivatives.
Selma Baghli-Bendimerad   +1 more
doaj   +1 more source

AI‐BioMech: Deep Learning Prediction of Mechanical Behavior in Aperiodic Biological Cellular Materials

open access: yesAdvanced Intelligent Discovery, EarlyView.
AI‐BioMech is a deep learning framework that predicts the mechanical behavior of biological cellular materials directly from 2D images. By replacing traditional finite element analysis with semantic segmentation, it identifies stress and strain distributions with 99% accuracy, offering a high‐speed, scalable alternative for analyzing complex, aperiodic
Haleema Sadia   +2 more
wiley   +1 more source

Bernstein’s Lethargy Theorem in Fréchet spaces

open access: yes, 2016
In this paper we consider Bernstein’s Lethargy Theorem (BLT) in the context of Fréchet spaces. Let X be an infinite-dimensional Fréchet space and let V = {Vn} be a nested sequence of subspaces of X such that Vn ⊆ Vn+1 for any n ∈ N and X = S∞ n=1 Vn. Let
Aksoy, Asuman Güven, Lewicki, Grzegorz
core   +2 more sources

The Fréchet Mean and Statistics in Non-Euclidean Spaces [PDF]

open access: yes, 2021
In this thesis, we study statistical properties of the Fréchet mean and its generalizations in abstract settings. These settings include large classes of scenarios, which may be of great interest in practice when dealing with nonstandard data.
Schötz, Christof
core   +1 more source

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

Fréchet Universality and Completion for F-Metric Spaces: A Generalized Metric Framework

open access: yesJournal of Mathematics
In this paper, we investigate the existence of completions and Fréchet universal spaces within the framework of F-metric spaces. We show that every F-metric space has a completion and that, for any family of F-metric spaces, there exists a Fréchet ...
Nima Norouzi-Chenari   +2 more
doaj   +1 more source

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