András Hajnal was born on May 13, 1931, and died on July 30, 2016.
He was a professor of mathematics at Rutgers University and a member of the Hungarian Academy of Sciences
He was known for his work in set theory and combinations.
András Hajnal received his university diploma (M.Sc. degree) in 1953 from the Eötvös Loránd University, his Candidate of Mathematical Science degree (roughly equivalent to Ph.D.) in 1957, under the supervision of László Kalmár, and his Doctor of Mathematical Science degree in 1962.
Hajnal was a faculty member from 1956 to 1995 at the Eötvös Loránd University; in 1994, he moved to Rutgers University to become the director of DIMACS, and he remained there as a professor until his retirement in 2004.
András Hajnal became a member of the Hungarian Academy of Sciences in 1982, and directed its mathematical institute from 1982 to 1992.
Hajnal was general secretary of the János Bolyai Mathematical Society from 1980 to 1990, and president of the society from 1990 to 1994.
From 1981, András Hajnal has been an advisory editor of the journal Combinatorica.
Hajnal has been an avid chess player, for most of his life.
He was the father of Peter Hajnal, the co-dean of the European College of Liberal Arts.
András Hajnal passed away at 85 years old.