Deaths on January 9

Pyotr Novikov

Died on January 9, 1975

Pyotr Novikov, Russian mathematician and theorist (b. 1901)

Pyotr Sergeyevich Novikov (Russian: Пётр Серге́евич Но́виков; 15 August 1901, Moscow, Russian Empire – 9 January 1975, Moscow, Soviet Union) was a Soviet mathematician.

Novikov is known for his work on combinatorial problems in group theory: the word problem for groups, and Burnside's problem. For proving the undecidability of the word problem in groups he was awarded the Lenin Prize in 1957.In 1953 he became a corresponding member of the USSR Academy of Sciences and in 1960 he was elected a full member.

He was married to the mathematician Lyudmila Keldysh (1904–1976). The mathematician Sergei Novikov is his son. Sergei Adian and Albert Muchnik were among his students.

References

Pyotr Novikov

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Events on 1975

26 Jun

Pine Ridge Indian Reservation
Two FBI agents and a member of the American Indian Movement are killed in a shootout on the Pine Ridge Indian Reservation in South Dakota; Leonard Peltier is later convicted of the murders in a controversial trial.
15 Aug

Sheikh Mujibur Rahman
Bangladeshi leader Sheikh Mujibur Rahman is killed along with most members of his family during a military coup.
15 Aug

Yasukuni Shrine
Takeo Miki makes the first official pilgrimage to Yasukuni Shrine by an incumbent prime minister on the anniversary of the end of World War II.
27 Aug

Dili
The Governor of Portuguese Timor abandons its capital, Dili, and flees to Atauro Island, leaving control to a rebel group.
1 Oct

Ellice Islands
The Seychelles gain internal self-government. The Ellice Islands split from Gilbert Islands and take the name Tuvalu.

Deaths on January 9

Pyotr Novikov

Died on January 9, 1975

References

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Events on 1975

Pine Ridge Indian Reservation

Sheikh Mujibur Rahman

Yasukuni Shrine

Dili

Ellice Islands