This book presents a collection of thoroughly refereed papers drawn together from three meetings on multi-agent systems. Five of the tutorial lectures included were presented at the ACAI/EASSS 2001 summer school on MAS, held in Prague, Czech Republic, in July 2001; seven revised reviewed student papers dealing with various aspects of MAS are included as well. A workshop on Adaptability and Embodiment using MAS, AEMAS 2001, also held in Prague, Czech Republic, concurrently with the ACAI/EASSS summer school, is represented by three papers. Finally, a further nine papers were selected from an International Workshop on Industrial Applications of Holonic and Multi-Agent Systems, HoloMAS 2001, held in Munich, Germany, in September 2001.