The journal Acta Informatica is dedicated to the international dissemination of research articles on formal methods for the design and analysis of programs, computational systems, and information structures. It covers relevant areas of theoretical computer science, including automata theory, logic, and algorithms in computer science. Topics of interest include: semantics of programming languages, models and modeling languages for concurrent, distributed, reactive, and mobile systems, models and modeling languages for timed, hybrid, and probabilistic systems, specifications, program analysis and verification, model checking and theorem proving, modal logic, temporal logic, first-order and higher-order logics and their variants, constraint logic, SAT/SMT solving techniques, theoretical aspects of databases, semi-structured data, and finite model theory, theoretical aspects of artificial intelligence, knowledge representation, description logic, automata theory, formal languages, term and graph rewriting, game-based models and synthesis, type theory, type calculi, algebraic, categorical, and algebraic methods, formal aspects of performance, reliability, and dependability analysis, foundations of information and network security, parallel, distributed, and randomized algorithms, design and analysis of algorithms, and foundations of network and communication protocols.