Results 91 to 100 of about 18,793 (244)

The Read-Bajraktarević functional on Hardy-Orlicz spaces

open access: yesFixed Point Theory and Algorithms for Sciences and Engineering
In this article we prove the existence of complex local fractal functions of the Hardy-Orlicz class. A local fractal function is the fixed point of the Read-Bajraktarević functional.
Waldo Arriagada
doaj   +1 more source

Positivity-Preserving Rational Cubic Fractal Interpolation Function Together with Its Zipper Form

open access: yesAxioms
In this paper, a novel class of rational cubic fractal interpolation function (RCFIF) has been proposed, which is characterized by one shape parameter and a linear denominator.
Shamli Sharma   +4 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Fixed point theorem and iterated function system in φ-metric modular space

open access: yesFixed Point Theory and Algorithms for Sciences and Engineering
We introduce and study the concept of φ-metric modular space and, then define φ-α-Meir-Keeler contraction on it and explore its fixed point. Further, we define the Hausdorff distance between two non-empty compact subsets of the considered space.
Bikramjit Acharjee, Guru Prem Prasad M
doaj   +1 more source

On linear transformation of generalized affine fractal interpolation function

open access: yesAIMS Mathematics
In this work, we investigate a class of generalized affine fractal interpolation functions (FIF) with variable parameters, where ordinate scaling is substituted by a real-valued control function. Let $ {\mathcal S} $ be an iterated function system (IFS)
Najmeddine Attia , Rim Amami
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Advances on fractal measures of Cartesian product sets in Euclidean space

open access: yesAIMS Mathematics
Let $ \mu $ and $ \nu $ be two compactly supported Borel probability measures on $ \mathbb R^d $ and $ \mathbb R^l $, respectively, and let $ q\in \mathbb R $ and $ h, g $ be two Hausdorff functions.
Najmeddine Attia
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Fast Basins and Branched Fractal Manifolds of Attractors of Iterated Function Systems [PDF]

open access: diamond, 2015
Michael F. Barnsley   +2 more
openalex   +1 more source

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