This Workshop contains all the submissions that have not been assigned in other specific Workshops. Upon the finalization of the Technical Program, submissions in the Core Workshop will be assigned to Presentation Slots according to their subject.

João Almeida^{1}

^{1}CeDRI-IPB, Polytechnic Institute of Bragança, Mathematics, Portugal

This workshop intends to aggregate novel works in Game Theory, Complex Systems and its Applications to Economics, Climate Change, Logistics, Earth&Life Sciences, Social Sciences, among others.

Alexander Pashchenko^{1}

^{1}Institute of Control Sciences of Russian Academy of Sciences, Laboratory of Intelligent control systems and modelling, Russian Federation

Significant changes in the organization of the energy industries associated with the processes of decentralization of production and distribution of energy, development of market relations and a number of other factors have led to the formation of new requirements for control systems in the energy sector. These circumstances demand new approaches to the modeling of technological processes and their management, based on the introduction of modern intelligent production asset management systems aimed at solving such complex problems as maximizing profit, increasing the controllability of energy enterprises, efficiency, reliability and safety of the operation of energy equipment and systems at minimization of accompanying technological, economic and other risks. This workshop is devoted to the latest achievements in the field of modeling and optimization of the functioning of energy facilities and equipment, the development of intelligent digital control systems, diagnostic systems, safety and predictive control, issues of sustainable functioning of industries and the economy.

Mário Ferreira^{1}

^{1}University of Aveiro, Department of Physics, Portugal

Solitary waves have been the subject of intense theoretical and experimental studies in many different fields, including hydrodynamics, nonlinear optics, plasma physics, and biology. In fact, the history of solitons dates back to 1834, the year in which James Scott Russell observed that a heap of water in a canal propagated undistorted over several kilometres. However, the term “soliton” was coined only in 1965 by Zabusky and Kruskal, to reflect the particle-like nature of solitary waves that remain intact even after mutual collisions. These waves correspond to localized solutions of integrable equations, such as the Korteweg-de Vries and the nonlinear Schrödinger equations. Based on such restrictive definition, solitons were usually attributed, until the beginning of the 1990s, only to integrable systems. However, soliton concept was subsequently broaden when many physicists understood the limitations of the theory. In fact, they observed that “solitary waves” do exist in a variety of systems, though they do not behave exactly as the classical theory predicts for “true” solitons. For example, many non-equilibrium phenomena and dissipative systems, such as convection instabilities, binary fluid convection and phase transitions, can be described by the complex Ginzburg-Landau equation (CGLE). In the field of nonlinear optics, the CGLE can describe various systems, namely optical parametric oscillators, free-electron laser oscillators, passive mode-locked fiber lasers, and all-optical transmission lines. In these systems there are dispersive elements, linear and nonlinear gain, as well as losses. In spite of being non-integrable,t he CGLE admits a multiplicity of stationary and pulsating soliton solutions, called dissipative solitons. This workshop is intended to aggregate all contributionc concerning the topic of optical solitons, both spatial and temporal.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

Given the criticality of the coronavirus pandemic, there is a wave of interest in scientific modeling of the epidemic. Investigating the social, economic and political factors in the spread of a pandemic such as COVID-19 is crucial to those trying to predict the spread and severity of epidemics and what we can and cannot know. This workshop is aimed at anyone trying to understand and evaluate the usefulness of mathematical models to make a prediction that could play a key role in government policy-making, as well as a research strategy for pandemic diseases such as COVID-19.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

The knowledge of the Universe as a whole, its origin, size and shape, its evolution and future, has always intrigued the human mind. Galileo wrote: "Nature's great book is written in mathematical language." In this Workshop we aim at collecting some contributions to enforce this statement. All issues which touch upon these ideas will be considered, questions such as: Is our universe finite or infinite? Is the cosmological constant at all there? What drives the acceleration of the Universe expansion? Dark energy, but what is it? What are the different uses of zeta functions and other special functions of mathematical analysis in present day physics? Beautiful mathematics are key in dealing with those questions and in providing the bridge which is crucial to understand (or just describe, modellize) the Universe we live in.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

This workshop will focus on topics of complexity with special emphasis on complex networks and multiplex networks. Complex networks are studied in many diverse fields, such as mathematics, physics, biology, sociology, economics, and computer science. In recent years, the field has seen a tremendous growth. The session will focus on recent advances in the field and will include both theoretical and applied research in complex systems. Particular emphasis will be given to the interdisciplinary nature of complex networks. A wide range of topics will be covered, such as network structure and dynamics on networks, coupled networks, spreading, synchronization, visualization, algorithms, large-scale data analysis, as well as networks of interest to biology, sociology, computer science, economics, medicine, linguistics, etc.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

Many differential equations, which are of interest in the physical sciences and engineering, exhibit geometric properties that are preserved by the dynamics. Discrete Lagrangian integrators, as a special type of geometric integration, has been recent interest in developing numerical schemes that preserve as many of these geometric invariants as possible. Such methods are of particular interest for problems that can be described by geometric mechanics, wherein the preservation of physical invariants such as the energy, momentum, and symplectic form can be important when simulating long-time dynamics of such systems. The aim of the session is to bring together researchers in mathematics, computer science, physical sciences, and engineering, who are interested in the broad area of numerical methods (for ordinary differential equations to partial differential equations) that preserve the underlying structure of the governing differential equations.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

Computational nanoscience in particular and Computational Material Science in general, are rapidly developing fields providing computer simulational and theoretical background for understanding of nanoscale phenomena and nanotechnology research. Computational nanoscience overarches the whole spectrum of science including biology, physics, engineering, material science and chemistry, describing the behaviour of matter at the scale of individual atoms and molecules. This session will concentrate on novel computational approaches used in nanoscale research, including: Quantum Monte Carlo, Molecular Dynamics, Density Functional Theory, Time-Dependent Quantum Dynamics Simulations, Interaction of Nanoscale Materials and Laser Fields, Quantum Transport in Nanoscale Materials, Multiscale Modeling of Nanoscale Materials, Novel Computational Approaches, Electronic Structure Calculations and Attoscale Dynamics.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

The finite element method is presently consolidated as very reliable technique used to solve partial differential equations in several areas in science and engineering, like electrical engineering, Computational Fluid Dynamics, Biomedical Modeling, and others. More recently, methods based on domains of influence, instead of finite elements meshes are also developed, like Element Free Galerkin and Smoothed-Particle Hydrodynamics. In this workshop, works related to the mathematical aspects of these methods, as well as, applications several branches of the physical sciences will be presented.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

In this workshop, recent advances in the stochastic modeling and analysis of random phenomena are discussed. Many real world systems exhibit a stochastic behavior as a result of random influences or uncertainty. Examples of these type of stochastic dynamics occur throughout the physical, social and life sciences. Discussions on specific applications are also welcomed.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

Owing to masses of digital real-world data it is now possible to create and validate models of human behaviour. Of special interest are human activities connected to use of Internet - their habits, movements or likings. Simple models, basing on fundamental physical laws and phenomena can be of instant use in this case. The Workshop is also open to new techniques connected to data mining and statistics that can facilitate the process of models' input preparation as well as help to discover new non-trivial phenomena.

Dimitrios Vlachos^{1}

^{1}University of Peloponnese, Department of Informatics and Telecommunications, Greece

The workshop especially organized for early stage researchers, doctoral and master students and provides a platform for

- young researchers to present and discuss on-going research
- industry professionals to present themselves and to meet with outstanding graduates, doctoral students and early stage researchers