| 1912 | - | He was born on August, 4 (on July, 22, Old Style) in Volyn' village of the Ryazan municipal district of the Ryazan region.
His father is Danila Aleksandrovich Aleksandrov. His mother is Elizabeth Iosifovna Bartoshevich. |
| 1929-1933 | - | A student of physical department of LSU. He graduated from LSU with a specialty of physicist theorist. |
| 1930-1936 | - | An employee of the State Optical Institute and Physical Institute of LSU. His first papers (supervisors of studies are V.A.Fok and B.N.Delone). |
| 1933-1941 | - | Professor in LSU (from 1937, deputy of full professor). |
| 1935 | - | Candidate's degree in mathematics. |
| 1938 | - | The degree of doctor in physics and mathematics. |
| 1938-1953 | - | Senior research associate of MIAS. |
| 1941-1944 | - | Evacuation to Kazan as a MIAS employee. |
| 1942 | - | Stalin Premium of the II degree for his works in geometry. |
| 1944-1946 | - | The full professor of A.I.Herzen Leningrad Pedagogical Institute. |
| 1944-1952 | - | LSU full professor. |
| 1945 | - | A rank of the full professor at sub-faculty «geometry».
Myedal' «For the defense of Leningrad».
Myedal' «For Valorous Labour during the Great Patriotic War of 1941-1945» |
| 1946 | - | He is elected a corresponding member of AS USSR. |
| 1948 | - | The book «Intrinsic geometry of convex surfaces». |
| 1950 | - | The book «Convex polyhedrons». |
| 1951 | - | N.I.Lobachevsky Premium. |
| 1952-1964 | - | Rector of LSU. |
| 1953 | - | The Labour Red Banner Order. |
| 1956 | - | An editor of a three-volume edition «Mathematics, its content, methods, and meaning» (together with A.N.Kolmogorov and M.A.Lavrentev). |
| 1957 | - | The Labour Red Banner Order. |
| 1959-1963 | - | Deputy of the RSFSR Supreme Council. |
| 1961 | - | Lenin Order. |
| 1962 | - | The book «Two-dimensional manyfolds of bounded curvature» (together with V.A.Zalgaller). |
| 1964 | - | A senior research associate, the head of a department of the Institute of Mathematics of SB AS USSR.
He was elected the full member of AS USSR on a vacancy for the Siberian Branch. |
| 1965-1986 | - | The full professor of Novosibirsk State University. |
| 1970-1988 | - | An associate editor in «Siberian Mathematical Journal». |
| 1974 | - | The brochure «Research and religious faith». |
| 1975 | - | The Labour Red Banner Order. |
| 1981-1999 | - | Textbooks on geometry for high school (together with A.L.Verner and V.I.Ryzhik). |
| 1982 | - | Order of People Friendship. |
| 1986-1988 | - | A head of the laboratory of geometry and topology in LOMI. |
| 1988 | - | Kniga «Problems of Science and Position of a Scientist». |
| 1986-1989 | - | Chairman of the Mathematical section of Educational-and-Methodical Council at the Ministry of Public Education. |
| 1988-1999 | - | An adviser at the LOMI management. |
| 1990 | - | A geometry textbook for teachers (together with N.Yu.Netsvetaev).
The Labour Red Banner Order for a special contribution to preservation and development of genetics and selection. |
| 1991 | - | L.Euler Golden medal of the Russian Academy of Sciences. |
| 1997 | - | A honorary member of the Moscow Mathematical Society. |
| 1999 | - | Honour Order in connection with the 275 anniversary of the Russian Academy of Sciences.
He died in St.-Petersburg on July, 27. He was buried at the Bogoslovskoye Cemetery. |
