Applied Mathematics in Nonlinear Dynamics and Chaos, 2nd Edition

A Special Issue of Mathematics (ISSN 2227-7390) belonging to the section "C2: Dynamical Systems".

Deadline for manuscript submissions: 31 October 2026 | Viewed by 1813

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Department of Engineering Mathematics, Riga Technical University, LV-1048 Riga, Latvia
Interests: complex networks; nonlinear systems; nonlinear dynamics; mathematical modelling; chaos theory
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Special Issue Information

Dear Colleagues,

We are pleased to announce this Special Issue of the journal Mathematics, entitled "Applied Mathematics in Nonlinear Dynamics and Chaos, 2nd Edition". This collection is focused on works devoted to new ideas in applied mathematics. It is assumed that these ideas can be formalized using the apparatus of the theory of dynamical systems. We welcome papers that consider processes that lead the regular to chaotic behavior of solutions. Chaotic behavior can be controlled by changing parameters and refining the model used. Of particular interest are articles that describe the implementation of the control of chaotic behavior. Is there order in chaos? Is it possible to imagine that the control of any chaotic systems is, in principle, impossible? To what extent, in this case, is this still possible? Since chaotic behavior can be present in systems arising in various fields of knowledge, this collection welcomes articles that study chaos in specific models used, for example, in engineering, mechanics, chemistry, biology, and the social sciences. Of particular note is mathematical modeling with the help of dynamic systems of processes in biological populations, not excluding the human community. Perhaps successful models will suggest ways to solve pressing problems in society, and shed light on some seemingly incomprehensible and unsolvable conflict situations of our time. All of the above do not exclude, but on the contrary, make desirable to some extent, standard forms of studying phenomena, their evolution, and development.

We would like to receive contributions from experts in their field (and simply interested beginner, but already skilled, mathematical workers) including the results of work in the following areas: 

  • The development of a dynamic mathematical model from a set of experimental data in some areas of production and/or natural science;
  • Theoretical work in the field of formalization of the phenomenon of chaos in terms inherent in the theory of dynamic systems;
  • “crazy” ideas regarding dynamic chaos and its connection with traditional theory, from real-minded specialists;
  • New ideas regarding the invasion of spaces of higher dimensions from the point of view of chaos and ways of translating the realities of these spaces into the realm of feelings, and not just logical formal thinking;
  • The stabilization of chaos in mathematical models, and recommendations for the stabilization of simulated real processes;
  • Vivid examples of the importance of understanding chaotic processes and descriptions of these processes that are accessible to the average person;
  • Chaos in number theory from the point of view of dynamical systems;
  • Proof of the possibility or refutations of the possibility of managing large social systems with the guaranteed limitation of uncontrolled processes;
  • Uncontrolled processes whether or not they are necessary, and how they emerge from controllable ones (in connection with artificial intelligence);
  • Everything related to objects and phenomena that seem interesting from the point of view of theory and practice, to which the methods of the theory of dynamic systems and those not specified above are applicable. 

Dr. Inna Samuilik
Guest Editor

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Keywords

  • nonlinear dynamics
  • bifurcation theory
  • chaos theory
  • irregular attractors
  • control theory
  • complex systems
  • numerical methods for dynamic systems
  • modeling and technology for dynamic systems in science and engineering

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Published Papers (3 papers)

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Research

20 pages, 1189 KB  
Article
On Hybrid-Function Solutions of the Lotka–Volterra Equations
by Jean-Luc Boulnois
Mathematics 2026, 14(17), 3162; https://doi.org/10.3390/math14173162 - 2 Sep 2026
Viewed by 106
Abstract
The classical Lotka–Volterra predator–prey system is often used in modeling species competition. The two-species nonlinear system is expressed in terms of a single positive coupling parameter λ. Based on a standard functional transformation, a novel λ-invariant Hamiltonian yields a system [...] Read more.
The classical Lotka–Volterra predator–prey system is often used in modeling species competition. The two-species nonlinear system is expressed in terms of a single positive coupling parameter λ. Based on a standard functional transformation, a novel λ-invariant Hamiltonian yields a system of two partially uncoupled first-order hybrid-function ODEs, albeit with one being linear. An exact single quadrature solution that is valid for any value of λ and the system’s energy is derived. In the particular case of λ=1, the ODE system completely uncouples. One ODE is autonomous. An exact analytic quadrature solution is derived that is predicated on the exact turning-point solutions. It is expressed in terms of the Lambert W function and must be evaluated numerically. Exact time-dependent solutions are presented for each individual species separately. In the case of λ1 an accurate practical approximation uncoupling the nonlinear system is proposed and solutions are provided in terms of explicit quadratures together with high-energy asymptotic solutions. An exact analytic expression for the system’s oscillation period that is valid for any value of λ and orbital energy is derived in terms of a dimensionless energy function. Full article
(This article belongs to the Special Issue Applied Mathematics in Nonlinear Dynamics and Chaos, 2nd Edition)
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20 pages, 352 KB  
Article
Asymptotic Behavior of Solutions of Two-Species Chemotaxis System with Strong Competition
by Daojie Xie and Shan Zhang
Mathematics 2026, 14(8), 1303; https://doi.org/10.3390/math14081303 - 13 Apr 2026
Viewed by 442
Abstract
This paper is concerned with a chemotaxis-competition system modeling the spatiotemporal evolution of two species that proliferate and compete according to Lotka–Volterra-type kinetics. We study the asymptotic behavior of solutions in the case of strong competition and show that they spatially segregate as [...] Read more.
This paper is concerned with a chemotaxis-competition system modeling the spatiotemporal evolution of two species that proliferate and compete according to Lotka–Volterra-type kinetics. We study the asymptotic behavior of solutions in the case of strong competition and show that they spatially segregate as the competition rate tends to infinity. Moreover, using a blow-up method, we obtain the uniform Hölder continuity of the solutions. Full article
(This article belongs to the Special Issue Applied Mathematics in Nonlinear Dynamics and Chaos, 2nd Edition)
46 pages, 4778 KB  
Article
Dynamics and Bifurcation Analysis of a Generalized Three-Dimensional Chaotic Financial System
by Anna Levicka and Inna Samuilik
Mathematics 2026, 14(7), 1154; https://doi.org/10.3390/math14071154 - 30 Mar 2026
Cited by 1 | Viewed by 625
Abstract
This paper investigates the dynamics of a three-dimensional nonlinear model of the financial system and the conditions for the emergence of chaotic behavior. The well-known chaotic system with given parameters and initial conditions is considered as a basis. For the initial model, critical [...] Read more.
This paper investigates the dynamics of a three-dimensional nonlinear model of the financial system and the conditions for the emergence of chaotic behavior. The well-known chaotic system with given parameters and initial conditions is considered as a basis. For the initial model, critical points are analyzed, two-dimensional and three-dimensional phase portraits are constructed, and Lyapunov exponents are calculated, which allow confirming the presence of chaos and assessing the degree of sensitivity to initial data. Next, a modification of the system is proposed, consisting of changing the degree of the variable in the second equation. For the group of models obtained, we considered the generalized form of the system, found its critical points, and classified them. At the next stage, a bifurcation analysis was performed: by changing the key parameters of the modified systems, bifurcation diagrams were constructed, and parameter regions corresponding to critical points, periodicity, quasi-periodicity, and chaos were identified. The results demonstrate that the nature of the dynamics depends significantly on both the parameters and the degree of nonlinearity and allow conclusions to be drawn about the mechanisms of chaos in the financial model under consideration. Full article
(This article belongs to the Special Issue Applied Mathematics in Nonlinear Dynamics and Chaos, 2nd Edition)
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