Dynamical Systems and Complex Systems

A special issue of Mathematics (ISSN 2227-7390). This special issue belongs to the section "C2: Dynamical Systems".

Deadline for manuscript submissions: 20 August 2025 | Viewed by 347

Special Issue Editor


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Guest Editor
School of Engineering, Zurich University of Applied Sciences (ZHAW), Technikumstrasse 9, 8401 Winterthur, Switzerland
Interests: analysis; dynamical systems; NMR spectroscopy

Special Issue Information

Dear Colleagues,

Dynamical and complex systems may sometimes refer to similar kinds of systems, considered either from the mathematical or application-oriented perspectives. In both viewpoints, the challenge is to tackle the interface between understanding the individual behavior of the constituent parts of the system and its collective behavior.

The mathematical analysis of dynamical systems has, from its origin, been intricately interwoven with the development of theoretical mechanics but has also developed various ramifications, ranging from completely integrable to ergodic or chaotic systems. Moreover, the interplay between continuous and discrete systems (maps) has proven to be an important research focus point. Recent advances in machine learning have also provided us with the opportunity to study dynamical systems not only from an analytical perspective but also from a data-driven viewpoint. On the other hand, understanding the dynamical behavior of various systems is an indispensable tool for the advancement of all kinds of neural network models which underlie many of the most recent artificial intelligence architectures.

The notion of complex systems usually refers, in a broad sense, to systems whose behavior is “complex” in the sense that it cannot be adequately understood from the properties of its individual components but which exhibit an emergent behavior. From a mathematical viewpoint, the challenge is to overcome this dichotomy between the “microscopic” and “macroscopic” behavior of a given system and, notwithstanding the many important developments in the past years and decades, there remain many questions to be answered.

The present Special Issue of Mathematics welcomes any paper which addresses, from a mathematical perspective, the interface and tension between the individual and collective behaviors of complex systems using the rich toolbox of dynamical systems analysis.

Dr. Andreas Henrici
Guest Editor

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Keywords

  • dynamical systems
  • complex systems
  • ergodic systems
  • chaotic systems

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Published Papers (1 paper)

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Research

16 pages, 3443 KiB  
Article
On Chaos, Tipping and Delayed Dynamical Transitions in a Hassell-Type Population Model with an Allee Effect
by Jorge Duarte, Cristina Januário and Nuno Martins
Mathematics 2025, 13(8), 1275; https://doi.org/10.3390/math13081275 - 12 Apr 2025
Viewed by 168
Abstract
This study examines abrupt changes in system dynamics, focusing on a Hassell-type density-dependent model with an Allee effect. It aims to analyze tipping points leading to extinction and bistability, including chaotic dynamics. Key methods include computing the topological entropy and Lyapunov exponents when [...] Read more.
This study examines abrupt changes in system dynamics, focusing on a Hassell-type density-dependent model with an Allee effect. It aims to analyze tipping points leading to extinction and bistability, including chaotic dynamics. Key methods include computing the topological entropy and Lyapunov exponents when varying the carrying capacity, the intrinsic growth rate and the initial conditions, providing a detailed characterization of chaotic regimes. Meanwhile, we derive an inverse square-root scaling law near a saddle-node bifurcation using a complex analysis. This study uniquely integrates chaos theory, a bifurcation analysis and scaling laws into a density-dependent ecological model with an Allee effect, revealing how chaotic regimes, bistability and an analytically derived inverse square-root scaling law near extinction shape the tipping point dynamics and critical transitions in ecological systems. Full article
(This article belongs to the Special Issue Dynamical Systems and Complex Systems)
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