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JOURNALS // Problemy Analiza — Issues of Analysis // Archive

Probl. Anal. Issues Anal., 2025 Volume 14(32), Issue 2, Pages 3–24 (Mi pa420)

Generalized logistic Neural Network Approximation over finite dimension Banach spaces

G. A. Anastassiou

Department of Mathematical Sciences, University of Memphis, Memphis, TN 38152, U.S.A.

Abstract: The functions under approximation here have as a domain a finite dimensional Banach space with dimension $N\in \mathbb{N}$ and are with values in $ \mathbb{R}^{N}$. Exploiting some topological properties of the above we are able to perform Neural Network multivariate approximation to the above functions. The treatment is quantitative. We produce multivariate Jackson type inequalities involving the modulus of continuity of the function under approximation. The established convergences are pointwise and uniform. Perturbation and symmetrization to our operators lead to enhanced speeds of convergence. The activation function here is the generalized logistic.

Keywords: finite dimensional Banach spaces, neural network operators approximation, perturbation and symmetrization, modulus of continuity, accelerated approximation, generalized logistic activation function.

UDC: 517.988.8

MSC: 41A17, 41A25, 41A99, 46B25

Received: 15.02.2024
Revised: 30.04.2025
Accepted: 01.05.2025

Language: English

DOI: 10.15393/j3.art.2025.18230



© Steklov Math. Inst. of RAS, 2026