FroCoS 2019 The 12th International Symposium on Frontiers of Combining Systems London, UK, September 4-6, 2019 Website: https://www.frocos2019.org Contact: chair@frocos2019.org

Due to requests from potential authors and from current authors wishing to polish their papers, we have extended the submission deadlines. The new deadlines are:

1 May 2019 (abstract), 8 May 2019 (paper)

Authors who have a good paper and are in doubt whether to send it to FroCoS may note some highlights of this year's edition: two affiliated workshops, two affiliated tutorials, a financially supported best paper award, five outstanding invited speakers (to be announced soon) and some support for young researchers traveling to the conference (including widely available cheap accommodation). We hope to see many of you this September in London -- in the beautiful campus of the Middlesex University, located 40 minutes from the city center and 20 minutes from Camden Town's iconic music venues!

GENERAL INFORMATION The 12th International Symposium on Frontiers of Combining Systems (FroCoS 2019) will take place in London. It will be hosted by the Department of Computer Science at the Middlesex University London, from 4 to 6 September 2019. FroCoS is the main international event for research on the development of techniques and methods for the combination and integration of formal systems, their modularization and analysis. The first FroCoS symposium was held in Munich, Germany, in 1996. Initially held every two years, since 2004 it has been organized annually with alternate years forming part of IJCAR. If we also count the IJCAR editions, this year FroCoS celebrates its 20th edition. FroCoS 2019 will be co-located with the 28th International Conference on Automated Reasoning with Analytic Tableaux and Related Methods (TABLEAUX 2019). The two conferences will provide a rich programme of workshops, tutorials, invited talks, paper presentations and system descriptions.

SCOPE OF CONFERENCE In various areas of computer science, such as logic, computation, program development and verification, artificial intelligence, knowledge representation, and automated reasoning, there is an obvious need for using specialized formalisms and inference systems for selected tasks. To be usable in practice, these specialized systems must be combined with each other and integrated into general purpose systems. This has led to the development of techniques and methods for the combination and integration of dedicated formal systems, as well as for their modularization and analysis. FroCoS traditionally focuses on these types of research questions and activities. Like its predecessors, FroCoS 2019 seeks to offer a common forum for research in the general area of combination, modularization, and integration of systems, with emphasis on logic-based methods and their practical use. Topics of interest for FroCoS 2019 include (but are not restricted to): * combinations of logics (such as higher-order, first-order, temporal, modal, description or other non-classical logics) * combination and integration methods in SAT and SMT solving * combination of decision procedures, satisfiability procedures, constraint solving techniques, or logical frameworks * combination of logics with probability and/or fuzzy measures * combinations and modularity in ontologies * integration of equational and other theories into deductive systems * hybrid methods for deduction, resolution and constraint propagation * hybrid systems in knowledge representation and natural language semantics * combined logics for distributed and multi-agent systems * logical aspects of combining and modularizing programs and specifications * integration of data structures into constraint logic programming and deduction * combinations and modularity in term rewriting * methods and techniques for the verification and analysis of information systems * methods and techniques for combining logical reasoning with machine learning

SUBMISSION GUIDELINES The program committee seeks high-quality submissions describing original work, written in English, not overlapping with published or simultaneously submitted work to a journal or conference with archival proceedings. Selection criteria include accuracy and originality of ideas, clarity and significance of results, and quality of presentation. The page limit in Springer LNCS style is 16 pages in total, including references and figures. Any additional material (going beyond the page limit) can be included in a clearly marked appendix. This appendix will be read at the discretion of the committee, and must be removed for the camera-ready version. Papers must be edited in LaTeX using the llncs style and must be submitted electronically as PDF files via EasyChair at https://easychair.org/conferences/?conf=frocos2019 Log in to EasyChair for FroCoS 2019https://easychair.org/conferences/?conf=frocos2019 easychair.org EasyChair uses cookies for user authentication. To use EasyChair, you should allow your browser to save cookies from easychair.org.

For each accepted paper, at least one of the authors is required to attend the conference and present the work. Prospective authors must register a title and an abstract three days before the paper submission deadline. Formatting instructions and the LNCS style files can be obtained at http://www.springer.com/br/computer-science/lncs/conference-proceedings-guid...

IMPORTANT DATES Abstract submission: 1 May 2019 Paper submission: 8 May 2019 Notification of paper decisions: 6 Jun 2019 Camera-ready papers due: 1 Jul 2019 FroCoS conference: 4-6 Sep 2019

PUBLICATION DETAILS The conference proceedings will be published in the Springer series Lecture Notes in Artificial Intelligence (LNAI/LNCS).

BEST PAPER AWARD The program committee will select the FroCoS 2019 Best Paper, which will be awarded 500 Euros. The award will be presented at the conference.

SUPPORT FOR STUDENT AND YOUNG RESEARCHER PARTICIPATION We have some limited funding for supporting students and young researchers traveling to the conference -- courtesy of direct sponsorship from Amazon and Springer and indirect sponsorship from the Association for Symbolic Logic. In addition, some funding will be available through the EUTypes COST action website. In all cases, authors of accepted papers will be given precedence. Please see the conference website for more details. In addition, the Middlesex University is offering accommodation at a £30 daily rate in some excellently maintained shared flats located close to the conference venue (https://www.mdx.ac.uk/student-life/accommodation/platt-hall).

AFFILIATED EVENTS (COMMON WITH TABLEAUX) WORKSHOPS: * The 25th Workshop on Automated Reasoning (ARW 2019, http://arw.csc.liv.ac.uk) Organizers: Florian Kammueller (Middlesex University) and Alexander Bolotov (University of Westminster) * Journeys in Computational Logic: Tributes to Roy Dyckhoff Organizers: Stephane Graham-Lengrand (SRI International), Ekaterina Komendantskaya (Heriot-Watt University) and Mehrnoosh Sadrzadeh (Queen Mary University of London) TUTORIALS: * Formalising concurrent computation: CLF, Celf, and applications (joint FroCoS/TABLEAUX tutorial). Presenters: Sonia Marin (IT-University of Copenhagen), Giselle Reis (Carnegie Mellon University in Qatar) and Iliano Cervesato (Carnegie Mellon University) * How to Build an Automated Theorem Prover - An Introductory Tutorial (invited TABLEAUX tutorial). Presenter: Jens Otten (University of Oslo)

PROGRAM COMMITTEE Carlos Areces, FaMAF - Universidad Nacional de Córdoba, Argentina Alessandro Artale, Free University of Bolzano-Bozen, Italy Franz Baader, TU Dresden, Germany Christoph Benzmüller, Free University of Berlin, Germany Jasmin Christian Blanchette, Vrije Universiteit Amsterdam, Netherlands Torben Braüner, Roskilde University, Denmark Clare Dixon, University of Liverpool, UK Marcelo Finger, University of São Paulo, Brazil Pascal Fontaine, LORIA, INRIA, University of Lorraine, France Didier Galmiche, LORIA, University of Lorraine, France Silvio Ghilardi, Università degli Studi di Milano, Italy Jürgen Giesl, RWTH Aachen, Germany Andreas Herzig, CNRS, IRIT, France Moa Johansson, Chalmers University, Sweden Jean Christoph Jung, University of Bremen, Germany Cezary Kaliszyk, University of Innsbruck, Austria Ekaterina Komendantskaya, Heriot-Watt University, UK Roman Kontchakov, Birkbeck, University of London, UK Alessio Lomuscio, Imperial College London, UK Assia Mahboubi, INRIA, France Stefan Mitsch, Carnegie Mellon University Cláudia Nalon, University of Brasília, Brazil Andrei Popescu, Middlesex University London, UK Silvio Ranise, Fondazione Bruno Kessler-Irst, Italy Christophe Ringeissen, LORIA-INRIA, France Philipp Rümmer, Uppsala University, Sweden Renate Schmidt, University of Manchester, UK Viorica Sofronie-Stokkermans, University Koblenz-Landau, Germany Christian Sternagel, University of Innsbruck, Austria Andrzej Szalas, Linköping University, Sweden Cesare Tinelli, University of Iowa, US Ashish Tiwari, SRI International, US Christoph Weidenbach, Max Planck Institute for Informatics, Germany

PC CHAIRS Andreas Herzig, CNRS, IRIT, France Andrei Popescu, Middlesex University London, UK

LOCAL ORGANIZATION COMMITTEE Kelly Androutsopoulos, Middlesex University London, UK Jaap Boender, Middlesex University London, UK Michele Bottone, Middlesex University London, UK Florian Kammueller, Middlesex University London, UK Rajagopal Nagarajan, Middlesex University London, UK Andrei Popescu, Middlesex University London, UK Franco Raimondi, Middlesex University London, UK

LOCAL ORGANIZATION CHAIR Franco Raimondi, Middlesex University London, UK