The Institute of Mathematics "Simion Stoilow" (IMAR) represents one of the most significant centres of the Romanian mathematical life. During its 50 years of activity virtually all leading Romanian mathematicians were members or associated with this research unit. IMAR is organized on research groups, each group having its own research agenda for periods of 1-3 years. Each group has a staff of senior researchers accompanied by young researchers and organizes at least one weekly seminar. Each group has permanent collaborations with many Universities from Romania and with different important research centers from abroad