ISCO 2026 CALL FOR PAPERS 9th International Symposium on Combinatorial Optimization (ISCO 2026) May 6-8, 2026, İzmir-Kuşadası, Turkey Spring School “Packing and Covering”, May 4-5, 2026 https://isco2026.com.tr/ THEME AND SCOPE ISCO is a biennial symposium whose aim is to bring together researchers from all the communities related to combinatorial optimization, including algorithms and complexity, mathematical programming and operations research. It is intended to be a forum for presenting original research in these areas and especially in their intersections. Quality papers on all aspects of combinatorial optimization, from mathematical foundations and theory of algorithms to computational studies and practical applications, are solicited. SESSIONS The conference is organized into plenary and parallel sessions. The conference language is English. Each speaker can give only one talk. Proposals for invited sessions are welcome. Researchers who are interested in organizing an invited session should contact Hakan Kutucu (hakankutucu@karabuk.edu.tr). SPRING SCHOOL ISCO 2026 will be preceded by a school on “Packing and Covering”. Gérard Cornuéjols, Carnegie Mellon University, and Ahmad Abdi, London School of Economics, will offer the school. They will give 16 hours of lectures on May 4 and 5, 2026. PLENARY SPEAKERS Miguel F. Anjos, Operational Research, University of Edinburgh, United Kingdom. Tinaz Ekim, Industrial Engineering, Bogazici University, Turkey. Hande Yaman Paternotte, Faculty of Economics and Business, KU Leuven, Belgium. Sebastian Pokutta, Institute for Mathematics, Technische Universität Berlin, Germany. SUBMISSION – PUBLICATION Papers presenting original unpublished results in all areas of combinatorial optimization and its applications are welcome. Simultaneous submissions to other conferences with published proceedings or journals are not allowed. There are two types of submissions: Regular papers up to 12 pages. The submission deadline is December 15, 2025. The proceedings will be published by a special volume of Lecture Notes in Computer Science (LNCS. For an accepted paper to be included in the proceedings, it should be presented at the conference by one of the authors. More information about the submission procedure are available in the web site of the conference. Short papers up to 4 pages. The submission deadline is January 31, 2026. Accepted short papers will be included in a volume of local proceedings. IMPORTANT DATES Submission of regular papers: December 15, 2025 Submission of short papers: January30, 2026 Notification: February 15, 2026 Early registration conference: March 1, 2026 Early registration school: March 1, 2026 CONFERENCE CHAIRS Volker Kaibel, Otto-von-Guerricke Universität, Germany Simge Küçükyavuz, Northwestern University, USA Hakan Kutucu, Karabuk University, Turkey A. Ridha Mahjoub, Kuwait University, Kuwait; University Paris-Dauphine, France STEERING COMMITTEE Mourad Baïou, LIMOS, CNRS, University Clermont-Auvergne, France Pierre Fouilhoux, LIPN, Université Sorbonne Paris Nord, France Luis Gouveia, University of Lisbon, Portugal Jon Lee, Industrial and Operations Engineering, University of Michigan, USA Ivana Ljubic, ESSEC Business School, Paris, France Nelson Maculan, Universidad Federal do Rio de Janeiro, Brasil A. Ridha Mahjoub, Kuwait University, Kuwait; University Paris-Dauphine, Paris, France Giovanni Rinaldi, IASI, Rome, Italy) ORGANIZING COMMITTEE Onur Baysal, University of Malta, Malta Mariem Ben Salem, ESPRIT, Tunis, Tunisia Gulnaz Boruzanlı, Ege University, Izmir, Turkey Korhan Günel, Aydın Adnan Menderes University, Izmir, Turkey Hakan Kutucu, Karabuk University, Turkey For more information on the Symposium and the School, see https://isco2026.com.tr/ Co-Chairs Volker Kaibel Simge Küçükyavuz Hakan Kutucu A. Ridha Mahjoub