Fixed Point Theory and Fractals

A special issue of Fractal and Fractional (ISSN 2504-3110). This special issue belongs to the section "General Mathematics, Analysis".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 623

Special Issue Editors


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Guest Editor
Department of Applied Mathematics, Universidad de Zaragoza, 50018 Zaragoza, Spain
Interests: fractals; fixed point theory; approximation; iterative methods
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Mathematics, University of Monastir, Monastir 5000, Tunisia
Interests: fractal geometry; multifractal analysis; dynamical systems

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Guest Editor
1. ISEL—Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro 1, 1959-007 Lisbon, Portugal
2. CMAFcIO—Centro de Matemática, Aplicações Fundamentais e Investigação Operacional, 1749-016 Lisbon, Portugal
Interests: fractals; fractal regression; Hausdorff dimension; fractal calculus; systems of iterative equations
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent decades, fractal theory has proven to be extremely useful for the modelling of a great quantity of natural and social phenomena. Its fields of applications range from biotechnology to financial markets, for instance.

Fractal geometry builds a bridge between classical geometry and modern analysis. The static models of the old geometry are enriched with the dynamics of an infinite iterative process, where the outputs are not merely points but more sophisticated geometric objects and structures.

A fractal set can be described in very different ways, but the current mathematical research tends to define a fractal as the fixed point of an operator on the space of compact subsets of a space of metric type. Iterated function systems provide a way of constructing an operator of this kind, and a procedure for the approximation of its fixed points. Thus, the relationships between fractal and fixed-point theories are deep and increasingly intricate.

This issue is aimed at emphasizing the relationships between both fields, including their theoretical as well as their applied aspects. This volume also welcomes acute insights in any of the disciplines with potential (even if they are not developed) influences in the other.

Prof. Dr. María A. Navascués
Dr. Bilel Selmi
Dr. Cristina Serpa
Guest Editors

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Keywords

  • fixed point theorems
  • fractal sets, functions and measures
  • fixed-point approximation and stability
  • iterative methods for the solution of differential and integral equations
  • iterated function systems
  • discrete dynamical systems
  • fractional calculus related to fixed point theory, dynamical systems or deterministic/stochastic fractals
  • applications of these fields

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Published Papers (1 paper)

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Research

18 pages, 340 KiB  
Article
Common Attractors of Generalized Hutchinson–Wardowski Contractive Operators
by Bilal Iqbal, Naeem Saleem, Iram Iqbal and Maggie Aphane
Fractal Fract. 2024, 8(11), 651; https://doi.org/10.3390/fractalfract8110651 - 9 Nov 2024
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Abstract
The aim of this paper is to obtain a fractal set of -iterated function systems comprising generalized -contractions. For a variety of Hutchinson–Wardowski contractive operators, we prove that this kind of system admits a unique common attractor. Consequently, diverse outcomes are [...] Read more.
The aim of this paper is to obtain a fractal set of -iterated function systems comprising generalized -contractions. For a variety of Hutchinson–Wardowski contractive operators, we prove that this kind of system admits a unique common attractor. Consequently, diverse outcomes are obtained for generalized iterated function systems satisfying various generalized contractive conditions. An illustrative example is also provided. Finally, the existence results of common solutions to fractional boundary value problems are obtained. Full article
(This article belongs to the Special Issue Fixed Point Theory and Fractals)
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