Graduated from YSU (1958), Dr. of Math.-Phys. Sciences (1971), prof. (1989), acad. (1990, corr. member 1974)

Head of Department (1978-1991, 1997-2004, since 2005), The Director (1989-1991, 1997-2006) of the Institute of Mathematics of NAS RA, Academician-Secretary of the Division of Mathematical and Technical Sciences of NAS RA (2006-2016), Member of the Presidium of NAS RA (1991-1994, 2006-2016), Head of Department of the Complex Analysis of the Institute of Mathematics of NAS RA (since 2006), Counselor of the Director of the Institute of Mathematics of NAS RA (since 2016)

Soviet Union Komsomol Prize and Gold medal winner in Mathematics for years 1969-1970, St. Mesrop Mashtots governmental order in 2013

Rector (1991-1993). Deserved scientist of Armenia (2003), Honorary Doctor of Trier University (Germany, 2004)