title: Introduction to Focus Issue: Complex Dynamics in Networks, Multilayered Structures and Systems.
abstract: In the last years, network scientists have directed their interest to the multi-layer character of real-world 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 multi-layer 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.
authors.affiliation: Embassy of Italy in Tel Aviv, 25 Hamered St., 68125 Tel Aviv, Israel.
authors.forename: Stefano
authors.initials: S
authors.lastname: Boccaletti
authors.affiliation: Departamento de Matemática Aplicada, Ciencia e Ingeniera de los Materiales y Tecnología Electrónica, Rey Juan Carlos University, 28933 Móstoles, Spain.
authors.forename: Regino
authors.initials: R
authors.lastname: Criado
authors.affiliation: Departamento de Matemática Aplicada, Ciencia e Ingeniera de los Materiales y Tecnología Electrónica, Rey Juan Carlos University, 28933 Móstoles, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: Romance
authors.affiliation: Institute Carlos I for Theoretical and Computational Physics, University of Granada, 18071 Granada, Spain.
authors.forename: Joaquín J
authors.initials: JJ
authors.lastname: Torres
mesh_terms: D000465:Algorithms; D008962:Models, Theoretical