
IV. Ecosmomics: Independent, UniVersal, Complex Network Systems and a Genetic CodeScript Source1. Network Physics: A Vital Interlinked Anatomy and Physiology Battiston, Federico, et al. The New Challenges of Multiplex Networks. arXiv:1606.09221. As “complex relational systems” become realized everywhere, Queen Mary University of London mathematicians consider better treatments of their actual nested, intertwined character. What do societies, the Internet, and the human brain have in common? They are all examples of complex relational systems, whose emerging behaviours are largely determined by the nontrivial networks of interactions among their constituents, namely individuals, computers, or neurons. Only recently we have realised that multiplexity, i.e. the coexistence of several types of interactions among the constituents of a complex system, is responsible for substantial qualitative and quantitative differences in the type and variety of behaviours that a complex system can exhibit. Here we provide an overview of some of the measures proposed so far to characterise the structure of multiplex networks, and a selection of models aiming at reproducing those structural properties and at quantifying their statistical significance. (Abstract excerpts) Battiston, Frederic, et al. Determinants of Public Cooperation in Multiplex Networks. arXiv:1704.04542. As the short quote says, Battiston and Vito Latora, Queen Mary University of London, with Matjaz Perc, University of Marbor, Slovenia, broach a unified nature across widest domains of physical substrates, evolutionary dynamics, and onto human cooperative behaviors as they manifest nature’s network topologies. See also a later paper by this group and colleagues Multiplex CorePeriphery Organization of the Human Connectome at 1801.01913. Synergies between evolutionary game theory and statistical physics have significantly improved our understanding of public cooperation in structured populations. Multiplex networks, in particular, provide the theoretical framework within network science that allows us to mathematically describe the rich structure of interactions characterizing human societies. (Abstract) Benson, Austin, et al. HigherOrder Organization of Complex Networks. Science. 353/163, 2016. Stanford and Purdue computer scientists contribute to this field of study as it reveals many natural, organic, cerebral, and societal dimensions. A commentary in the same issue, Network Analysis in the Age of Big Data, makes note of these advances. For an example of specific usage see Integrative Methods for Analyzing Big Date in Precision Medicine in Proteomics (16/741, 2016), and TopologyFunction Conservation in ProteinProtein Interaction Networks in Bioinformatics (31/1632, 2015). Networks are a fundamental tool for understanding and modeling complex systems in physics, biology, neuroscience, engineering, and social science. Many networks are known to exhibit rich, lowerorder connectivity patterns that can be captured at the level of individual nodes and edges. However, higherorder organization of complex networks—at the level of small network subgraphs—remains largely unknown. Here, we develop a generalized framework for clustering networks on the basis of higherorder connectivity patterns. This framework provides mathematical guarantees on the optimality of obtained clusters and scales to networks with billions of edges. The framework reveals higherorder organization in a number of networks, including information propagation units in neuronal networks and hub structure in transportation networks. Results show that networks exhibit rich higherorder organizational structures that are exposed by clustering based on higherorder connectivity patterns. Berner, Rico, et al. Adaptive Dynamical Networks. arXiv:2304.05652. This April entry by Humboldt University and University of Munich theorists including Thilo Gross and Jurgen Kurths can serve to gather and note current contributions which altogether presage for a robust 2023 synthesis of nature’s anatomical vitality. In the same while, see also On the Transient and Equilibrium Features of Growing Fractal Complex Networks by Alexandre Benatti and Luciano da Costa at arXiv:2034.12780, Dense Network Motifs Enhance Dynamical Stability by Bnaya Gross, et al (2304.12044) and Emergent Stability in Complex Network Dynamics by Chandrakala Meena, et al in Nature Physics (April 2023) among a growing number. Adaptive dynamical networks (ADNs) represent a broad class of systems that can change their connectivity over time depending on a dynamical state. Here we provide a detailed description of ADNs, note applications in research fields, highlight their arising dynamical phenomena, and give an overview of workable mathematical methods. (Excerpt) Biamonte, Jacob, et al. Complex Networks: From Classical to Quantum. arXiv:1702.08459. Biamonte, University of Malta, Mauro Faccin, Catholic University of Louvain, and Manlio De Domenico, Universitat Rovirai Virgili, Spain (search each) post a working “unified analysis” of nonlinear dynamic theories. As an integral result, a further confluence with “quantum Information science” is scoped out, which leads to a natural crossconvergence of these disparate fields. Recent progress in applying complex network theory to problems faced in quantum information and computation has resulted in a beneficial crossover between two fields. Complex network methods have successfully been used to characterize quantum walk and transport models, entangled communication networks, graph theoretic models of emergent spacetime and in detecting community structure in quantum systems. Information physics is setting the stage for a theory of complex and networked systems with quantum informationinspired methods appearing in complex network science, including informationtheoretic distance and correlation measures for network characterization. (Abstract excerpt) Bianconi, Ginestra. Interdisciplinary and Physics Challenges of Network Theory. arXiv:1509.00345. As a grand synthesis across nature and nurture proceeds apace, a Queen Mary University of London mathematical physicist sketches out how a newly found “universally of complex networks” can be extended even to quantum domains. Such a perception then reveals their generic, scalefree presence from every cosmic to cerebral realm. See also her paper Network Geometry from Complexity to Quantum Geometry (1511.04539), Complex Quantum Network Manifolds in Dimension d > 2 are ScaleFree with Christoph Rahmede (search, 1506.02648).and Emergent Complex Network Geometry (1412.3405). Bianconi, Ginestra. Multilayer Networks: Structure and Function. Oxford: Oxford University Press, 2018. A Queen Mary University of London mathematician provides a comprehensive tutorial on these novel insights into how ubiquitous and deep nature’s organic and cerebral connectivities actually are. After a technical survey, it covers Communities, Centrality Measures, Interdependence, Epidemic Diffusion, and much more. See also Multiplex Networks: Basic Formalism and Structural Properties by Cozzo, Emanuele, et al (SpringerBriefs, 2018). Multilayer networks is a rising topic in Network Science which characterizes the structure and the function of complex systems formed by several interacting networks. Multilayer networks research has been propelled forward by the wide realm of applications in social, biological and infrastructure networks and the large availability of network data, as well as by the significance of recent results, which have produced important advances. This book presents a comprehensive account of this emerging field by way of a theoretical and practical introduction to multilayer network science. Bianconi, Ginestra. Welcome to JPhys Complexity. Journal of Physics: Complexity. 1/010201, 2020. The Queen Mary University of London systems mathematician and author (search) introduces this inaugural Institute of Physics IOP journal. Actually its occasion is a bit overdue within the 21st century shift in physical studies from inorganic parts and energies to nature’s constant, intricate topologies and lively dynamics as they rise from statistical phenomena to genomic, physiology, neural and national phases. As the quote cites, once again this advance is about moving from separate pieces to their equally real interlinkages in a genesis uniVerse. Typical papers in the first two issues are Simplicial Complexes, Road Network Development, Classical Information Theory of Networks and Observables in Complex Quantum Networks. In addition, Guido Caldarelli offers A Perspective on Complexity and Networks Science, with an emphasis on financial phases. Boccaletti, Stefam, et al. The Structure and Dynamics of Networks with Higher Order Interactions. Physics Reports. Vol. 1018, 2023. Seven senior European complexity researchers take their studies of nature’s pervasive organic anatomies to a further integrative level. Thus a multiplex multiversality of discrete nodal entities and communicative associations is coming to vivify and distinguish a true ecosmic procreation. All beauty, richness and harmony in the emergent dynamics of a complex system depends much on the certain way its nodal components interact. The last twentyfive years have seen the advent and advance of Network Science, wherein an array of distributed systems in physics, biology, social sciences and engineering are found to be distinguished by this relative anatomy and physiology. But many networks involve pairwise behaviors, whereas realworld functions have multiplex actions as groups of nodes. In this report, we review the extensive literature on the structure and dynamics of hypergraphs and simplicial complexes as they gain relevance via better data sets and analysis techniques. (Excerpt) Boccaletti, Stefano, et al. Complex Dynamics in Networks, Multilayered Structures and Systems. Chaos. 26/6, 2016. An introduction to a focus section about dynamic network topologies which are actually composed of nested multitudes, often in selfsimilar communities, modules, rich hubs, and so on across every cosmic, physiological, cerebral, social media and ecosystem realm. For a sample pithy see A Biplex Approach to PageRank Centrality by Francisco Pedroche, et al, Optimal Distributions for Multiplex Logistic Networks by Luis Sola Conde, and Extracting Information from Multiplex Networks by Jacopo Iacovacci and Ginestra Bianconi. In the last years, network scientists have directed their interest to the multilayer character of realworld systems, and explicitly considered the structural and dynamical organization of graphs made of diverse layers between its constituents. Most complex systems include multiple subsystems and layers of connectivity and, in many cases, the interdependent components of systems interact through many different channels. Such a new perspective is indeed found to be the adequate representation for a wealth of features exhibited by networked systems in the real world. The contributions presented in this Focus Issue cover, from different points of view, the many achievements and still open questions in the field of multilayer networks, such as: new frameworks and structures to represent and analyze heterogeneous complex systems, different aspects related to synchronization and centrality of complex networks, interplay between layers, and applications to logistic, biological, social, and technological fields. (Boccaletti Abstract) Boccaletti, Stefano, et al. The Structure and Dynamics of Multilayer Networks. Physics Reports. Online July, 2014. The 150 page paper is also at arXiv:1407.0742. A tutorial by researchers from Complex Systems Institutes in Italy, Israel, UK, Spain, China, Singapore, and Portugal for these latest theories and discoveries by a “Worldwide Knowledge Society” as they array across nonlinear nature. As now commonly possible, a first part elucidates independent, universal network topologies and processes such as ensembles, resilience, percolation, synchronization, interactions, and so on. By this relational view extant living and social systems can be seen as pervaded with evolving neural networklike geometries and vital activities. Their evidence and effect is then noted for social, technical, economic, biomedicine, climatic, and psychological realms. By these understandings, palliative social and environmental improvements can be informed and accomplished. In the past years, network theory has successfully characterized the interaction among the constituents of a variety of complex systems, ranging from biological to technological, and social systems. However, up until recently, attention was almost exclusively given to networks in which all components were treated on equivalent footing, while neglecting all the extra information about the temporal or contextrelated properties of the interactions under study. Only in the last years, taking advantage of the enhanced resolution in real data sets, network scientists have directed their interest to the multiplex character of realworld systems, and explicitly considered the timevarying and multilayer nature of networks. We offer here a comprehensive review on both structural and dynamical organization of graphs made of diverse relationships (layers) between its constituents, and cover several relevant issues, from a full redefinition of the basic structural measures, to understanding how the multilayer nature of the network affects processes and dynamic. (Abstract) Boguna, Marian, et al. Network Geometry. arXiv:2001.03241. Six senior complexity scientists including Dmitri Krioukov and Shlomo Havlin offer a January 2020 posting which couldl be a bidecadal capsule of how much studies of nature’s innate node/link multiplex anatomy and physiology has been found in vivifying evidence from physical depths and galactic clusters and to evolutionary bodies, brains, groupings and onto economies and cultures. This entry describes how “fractal selfsimilarities, diffusion dynamics, and functional modularity” have been found from a chemicalspace renormalization to cellular communities across life’s biota, as shown in intricate displays. Into the 2010s, an increasing implication is the presence of an independent, mathematic source in exemplary manifestation at each and every scale and instance. See also Geometric Origins of SelfSimilarity in the Evolution of Real Networks by this group at 1912.00704 and Scalefree Networks Revealed from Finitesize Scaling at 1805.09512. Networks are natural geometric objects. Yet the discrete metric structure of shortest path lengths in a network is not the only reservoir of geometric distances. Other forms of networkrelated topologies are continuous latent spaces underlying many networks, and the effective geometry induced by dynamical processes. A growing amount of evidence shows that the three approaches are well related. Network geometry is thus quite efficient in discovering hidden symmetries, such as scaleinvariance, and other fundamental physical and mathematical properties, along with a variety of applications from the understanding how the brain works to routings in the Internet. Here, we review theoretical and practical developments in network geometry in the last two decades, and offer perspectives on future research for this novel complexity frontier. (Abstract)
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