SOFSEM is an annual winter conference devoted to the theory and practice of computer science. The conference traditionally focuses on the latest results and developments of fundamental research in computer science (informatics), inspired by the algorithmic challenges of our time. SOFSEM has a long tradition as a high-quality research conference, and a venue where researchers from academia and industry in all stages of their career can share their insights. The series of SOFSEM conferences began in 1974, and was only interrupted in 2022 due to the COVID-19 pandemic. The 51^st edition of SOFSEM will be held in February 2026 as a physical event in Kraków, Poland. The proceedings will be published in the series Lecture Notes in Computer Science (LNCS) by Springer. Additionally, authors of selected papers presented at the conference will be invited to submit extended versions to a special issue of the Discrete Mathematics & Theoretical Computer Science.

Registration is now open. The conference fee is 2100 PLN (approx. €500) for regular participants and 1700 PLN (approx. €400) for student participants. Every Bachelor's, Master's, and Ph.D. student is eligible for the reduced student fee.

To register, please complete the registration form.

Upon successful registration, you will receive a confirmation email containing a private link to view your registration details and complete the payment. You will also receive a separate email directly from the payment platform to settle the fee.

Alternatively, the conference fee may be paid via direct bank transfer using the details below:

The conference fee covers lunches, coffee breaks, reception, the conference dinner, and a planned excursion. Participants are responsible for arranging their own accommodation. Use this link to access special rates (5 nights cost approximately €270 for a single room and €330 for a double room) at a nearby Hotel Convictus Cracovia.

We invite participants to submit poster abstracts presenting late-breaking research findings or works in progress that align with the conference themes.

Poster abstracts should be submitted electronically through EasyChair.

Submissions must be prepared in accordance with Springer’s Instructions for Authors of Proceedings, and use the LaTeX template provided on Springer’s page. The length should not exceed 2 pages in total.

The program committee encourages submission of original research papers in all areas of foundations of computer science and artificial intelligence, including

• algorithm engineering,
• algorithms and data structures,
• automata, languages, rewriting systems,
• combinatorial optimization,
• combinatorics on words,
• computability, decidability, models of computation,
• computational complexity,
• computational geometry,
• cryptography and security,
• logic in computer science,
• games and online algorithms,
• graph drawing,
• graph algorithms,
• mathematical programming,
• network science,
• parallel and distributed computing,
• parameterized complexity,
• probabilistic and analytic methods in computer science,
• quantum computing,
• robotics,
• theory of machine learning and data science,
• and other relevant theory topics in computing and AI.

For any questions, please don't hesitate to contact us at sofsem@uj.edu.pl .