# BeComplex 2026 — Belgrade School on Complex Systems > A week-long international school on complex systems science, held 21–27 June 2026 at Petnica Science Center, Serbia. Organized by the Faculty of Physics, University of Belgrade. ## Pages - [Home](/): Overview of BeComplex 2026, dates, venue, and supporters. - [Committee](/committee): Organizing and scientific committee members. - [Themes](/themes): Scientific topics — chaos, fractals, pattern formation, complex networks, and more. - [Program](/program): Dual-track timetable of mini-courses, seminars, and collaborative sessions. - [Venue](/venue): Petnica Science Center — travel, accommodation, and facilities. - [Gallery](/gallery): Photographs from past and current events. - [Contact](/contact): Direct contact details for the organizing committee.