Lecture Notes in Computer Science

This book constitutes the proceedings of the 51st International Conference on Current Trends in Theory and Practice of Computer Science, SOFSEM 2026, held in Krakow, Poland, during February 2026.The 48 full papers included in this book were carefully reviewed and selected from 133 submissions. They deal with the theory and practice of computer science focusing on the latest results and developments of fundamental research in computer science.