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This review volume brings together the works of several prominent researchers who had collaborated with Janusz Brzozowski in area of regular expressions and on syntactic semigroups of formal languages, as well as Brzozowski conjecture, dot-depth hierarchy, Communicating Sequential Processes (CSP) and DFA minimization.Contributors of this review volume include Zoltán Ésik, Helmut Jorgensen, Markus Holzer, Martin Kutrib, Ernst Leiss, Jean-Éric Pin, Grzegorz Rozenberg, Arto Salomaa, Kai Salomaa, Andrew Szilard and Bruce Watson.

This book constitutes the thoroughly refereed papers of the 17th International Conference on Implementation and Application of Automata, CIAA 2012, held in Porto, Portugal, in July 2012. The 21 revised full papers presented together with 5 invited papers and 7 short papers were carefully selected from 53 submissions. The papers cover various topics such as automata applications in formal verification methods, natural language processing, pattern matching, data storage and retrieval, and bioinformatics, as well as theoretical work on automata theory.

This volume is the proceedings of the Second Advanced School on Artificial Intelligence (EAIA '90) held in Guarda, Portugal, October 8-12, 1990. The focus of the contributions is natural language processing. Two types of subject are covered: - Linguistically motivated theories, presented at an introductory level, such as X-bar theory and head- driven phrase structure grammar, - Recent trends in formalisms which will be familiar to readers with a background in AI, such as Montague semantics and situation semantics. The topics were chosen to provide a balanced overview of the most important...