[1] Sergey Aleksandrovich Ambartsumian was born on 17 March 1922 in the Soviet city of Alexandropol (Gyumri).

Between 1946 and 1955 he was the Senior Researcher, Head of Sector, deputy director of the Institute of Building Materials and Structures of the Armenian SSR Academy of Sciences.

[citation needed] In 1953 he received the title of professor, becoming member of the Academy of Sciences of the Armenian SSR in 1956.

[2] Between 1959 and 1970 he was Director of the Institute of Mathematics and Mechanics of the Armenian SSR Academy of Sciences.

[3] In 1977 he was elected rector of Yerevan State University, office he held until 1991.