This book constitutes the refereed proceedings of the 25th International Colloquium on Automata, Languages and Programming, ICALP'98, held in Aalborg, Denmark, in July 1998.
The 70 revised full papers presented together with eight invited contributions were carefully selected from a total of 182 submissions. The book is divided in topical sections on complexitiy, verification, data structures, concurrency, computational geometry, automata and temporal logic, algorithms, infinite state systems, semantics, approximation, thorem proving, formal languages, pi-calculus, automata and BSP, rewriting, networking and routing, zero-knowledge, quantum computing, etc..

This volume constitutes the proceedings of SWAT '94, the 4th Scandinavian Workshop on Algorithm Theory, held in Aarhus, Denmark in July 1994. The SWAT events are organized each even year and alternate with the WADS meetings (Workshops on Algorithms and Data Structures) held each odd year in North America.
The volume contains 31 papers selected from a total of 100 submissions and 3 invited presentations by Michael Fredman (Rutgers), Johan Hastad (Stockholm), and Ketan Mulmuley (Chicago). The contributions cover algorithms and data structures in all areas of computer science and in discrete mathematics, particularly including graph theory, computational geometry, and databases.