supported promising young mathematicians in his fields of interest. He also promoted the early developments of category theory applications in relational biology and mathematical biophysics/mathematical biology. Academic positions Popescu was appointed as a Lecturer at the University of Bucharest in 1968 where he taught graduate students until 1972. Starting in 1964 he also held a research appointment at the Institute of Mathematics of the Romanian Academy. The institute was closed in 1976 by order of Nicolae Ceaușescu (for reasons related to his daughter Zoia Ceaușescu, who had been hired at the institute two years before), but was reopened in 1990, after the Romanian Revolution. Publications Between 1962 and 2008 Popescu published more than 102 papers in peer-reviewed mathematics journals, several monographs on the theory of sheaves, and several books on abelian category theory and abstract algebra, including In a Grothendieck-like, energetic style, he initiated and provided scientific leadership to several seminars on category theory, sheaves and abstract algebra which resulted in a continuous stream of high-quality mathematical publications in international, peer-reviewed mathematics journals by several members participating in his Seminar series. Personal life Popescu died in Bucharest on July 29, 2010. He is survived by his wife, Professor Dr. Elena Liliana Popescu, and their three children, one of whom, , is a politician. Recognition In 1971 Popescu received the Simion Stoilow Prize in Mathematics of the Romanian Academy. He was elected President of the Romanian Mathematical Society in 1990 and corresponding Member of the Romanian Academy in 1997. On the 80th anniversary of his birthday, the Faculty of Mathematics and Informatics at the University of Bucharest and the Institute of Mathematics of the Romanian Academy organized a conference in his memory. Notes 1937 births 2010 deaths People from Strehaia Carol I National College alumni University of Bucharest alumni Academic staff of the University of Bucharest Romanian scientists Romanian inventors 20th-century Romanian mathematicians 21st-century Romanian mathematicians Corresponding members of the Romanian Academy Algebraists Category theorists