List of International Mathematical Olympiads

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Logo of the International Mathematical Olympiad IMO logo.svg
Logo of the International Mathematical Olympiad

The first of the International Mathematical Olympiads (IMOs) was held in Romania in 1959. The oldest of the International Science Olympiads, the IMO has since been held annually, except in 1980. That year, the competition initially planned to be held in Mongolia was cancelled due to the Soviet invasion of Afghanistan. [1] Because the competition was initially founded for Eastern European countries participating in the Warsaw Pact, under the influence of the Eastern Bloc, [2] the earlier IMOs were hosted only in Eastern European countries, gradually spreading to other nations. [3]

Contents

The first IMO was held in Romania in 1959. Seven countries entered – Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, Romania and the Soviet Union – with the hosts finishing as the top-ranked nation. [4] The number of participating countries has since risen: 14 countries took part in 1969, 50 in 1989, and 104 in 2009. [5]

North Korea is the only country whose entire team has been caught cheating, resulting in its disqualification at the 32nd IMO in 1991 and the 51st IMO in 2010. [6] (However, the 2010 case was controversial. [7] [8] ) There have been other disqualifications of contestants due to cheating, but such cases are not officially made public. [9] In January 2011, Google gave €1 million to the IMO organization to help cover the costs of the events from 2011 to 2015. [10]

List of Olympiads

The four perfect scorers in the 2001 IMO. From left to right: Gabriel Carroll, Reid Barton, Zhiqiang Zhang, and Liang Xiao. Perfect-scorers.jpg
The four perfect scorers in the 2001 IMO. From left to right: Gabriel Carroll, Reid Barton, Zhiqiang Zhang, and Liang Xiao.
The Bangladesh team at the 2009 IMO Bdimoteam09.JPG
The Bangladesh team at the 2009 IMO
Serbia's team for the 2010 IMO Matematicka gimnazija - Mathematical Gymnasium Belgrade - MGB - IMO 2010 - pic3.jpg
Serbia's team for the 2010 IMO
The closing ceremony of the 2015 IMO IMO 2015 closing ceremony.jpg
The closing ceremony of the 2015 IMO
# [5] VenueYearDate [5] Top-ranked country [11] References
1  Flag of Romania (1952-1965).svg Brașov and Bucharest 1959June 23 – July 31Flag of Romania (1952-1965).svg  Romania [12]
2  Flag of Romania (1952-1965).svg Sinaia 1960July 18 – July 25Flag of the Czech Republic.svg  Czechoslovakia [12]
3  Flag of Hungary.svg Veszprém 1961July 6 – July 16Flag of Hungary.svg  Hungary [12]
4  Flag of the Czech Republic.svg České Budějovice 1962July 7 – July 15Flag of Hungary.svg  Hungary [12]
5  Flag of Poland.svg Warsaw and Wrocław 1963July 5 – July 13Flag of the Soviet Union.svg  Soviet Union [12]
6  Flag of the Soviet Union.svg Moscow 1964June 30 – July 10Flag of the Soviet Union.svg  Soviet Union [12]
7  Flag of East Germany.svg East Berlin 1965June 13 – July 13Flag of the Soviet Union.svg  Soviet Union [12]
8  Flag of Bulgaria.svg Sofia 1966July 3 – July 13Flag of the Soviet Union.svg  Soviet Union [12]
9  Flag of Yugoslavia (1946-1992).svg Cetinje 1967July 7 – July 13Flag of the Soviet Union.svg  Soviet Union [12]
10  Flag of the Soviet Union.svg Moscow 1968July 5 – July 18Flag of East Germany.svg  East Germany [12]
11  Flag of Romania (1965-1989).svg Bucharest 1969July 5 – July 20Flag of Hungary.svg  Hungary [12]
12  Flag of Hungary.svg Keszthely 1970July 8 – July 22Flag of Hungary.svg  Hungary [12]
13  Flag of the Czech Republic.svg Žilina 1971July 10 – July 21Flag of Hungary.svg  Hungary [12]
14  Flag of Poland.svg Toruń 1972July 5 – July 17Flag of the Soviet Union.svg  Soviet Union [12]
15  Flag of the Soviet Union.svg Moscow 1973July 5 – July 16Flag of the Soviet Union.svg  Soviet Union [12]
16  Flag of East Germany.svg Erfurt and East Berlin 1974July 4 – July 17Flag of the Soviet Union.svg  Soviet Union [12]
17  Flag of Bulgaria (1971-1990).svg Burgas and Sofia 1975July 3 – July 16Flag of Hungary.svg  Hungary [12]
18  Flag of Austria.svg Lienz 1976July 2 – July 21Flag of the Soviet Union.svg  Soviet Union [12]
19  Flag of Yugoslavia (1946-1992).svg Belgrade 1977July 1 – July 13Flag of the United States.svg  United States [12]
20  Flag of Romania (1965-1989).svg Bucharest 1978July 3 – July 10Flag of Romania (1965-1989).svg  Romania [12]
21  Flag of the United Kingdom.svg London 1979June 30 – July 9Flag of the Soviet Union.svg  Soviet Union [12]
- The 1980 IMO was due to be held in Mongolia. It was cancelled, and split into two unofficial events in Europe. [1]
22  Flag of the United States.svg Washington, D.C. 1981July 8 – July 20Flag of the United States.svg  United States [12]
23  Flag of Hungary.svg Budapest 1982July 5 – July 14Flag of Germany.svg  West Germany [12]
24  Flag of France.svg Paris 1983July 3 – July 12Flag of Germany.svg  West Germany [12]
25  Flag of the Czech Republic.svg Prague 1984June 29 – July 10Flag of the Soviet Union.svg  Soviet Union [12]
26  Flag of Finland.svg Joutsa 1985June 29 – July 11Flag of Romania (1965-1989).svg  Romania [12]
27  Flag of Poland.svg Warsaw 1986July 4 – July 15Flag of the Soviet Union.svg  Soviet Union
Flag of the United States.svg  United States 		[12]
28  Flag of Cuba.svg Havana 1987July 5 – July 16Flag of Romania (1965-1989).svg  Romania [12]
29  Flag of Australia (converted).svg Sydney and Canberra 1988July 9 – July 21Flag of the Soviet Union.svg  Soviet Union [12]
30  Flag of Germany.svg Braunschweig 1989July 13 – July 24Flag of the People's Republic of China.svg  China [12]
31  Flag of the People's Republic of China.svg Beijing 1990July 8 – July 19Flag of the People's Republic of China.svg  China [12]
32  Flag of Sweden.svg Sigtuna 1991July 12 – July 23Flag of the Soviet Union.svg  Soviet Union [12] [n 1]
33  Flag of Russia (1991-1993).svg Moscow 1992July 10 – July 21Flag of the People's Republic of China.svg  China [12]
34  Flag of Turkey.svg Istanbul 1993July 13 – July 24Flag of the People's Republic of China.svg  China [12]
35  Flag of Hong Kong 1959.svg Hong Kong [n 2] 1994July 8 – July 20Flag of the United States.svg  United States [12]
36  Flag of Canada (Pantone).svg Toronto 1995July 13 – July 25Flag of the People's Republic of China.svg  China [13]
37  Flag of India.svg Mumbai 1996July 5 – July 17Flag of Romania.svg  Romania [14]
38  Flag of Argentina.svg Mar del Plata 1997July 18 – July 31Flag of the People's Republic of China.svg  China [15]
39  Flag of the Republic of China.svg Taipei 1998July 10 – July 21Flag of Iran.svg  Iran [16]
40  Flag of Romania.svg Bucharest 1999July 10 – July 22Flag of the People's Republic of China.svg  China
Flag of Russia.svg  Russia 		[17]
41  Flag of South Korea.svg Daejeon 2000July 13 – July 25Flag of the People's Republic of China.svg  China [18]
42  Flag of the United States.svg Washington, D.C. 2001July 1 – July 14Flag of the People's Republic of China.svg  China [19]
43  Flag of the United Kingdom.svg Glasgow 2002July 19 – July 30Flag of the People's Republic of China.svg  China [20]
44  Flag of Japan.svg Tokyo 2003July 7 – July 19Flag of Bulgaria.svg  Bulgaria [21]
45  Flag of Greece.svg Athens 2004July 6 – July 18Flag of the People's Republic of China.svg  China [22]
46  Flag of Mexico.svg Mérida 2005July 8 – July 19Flag of the People's Republic of China.svg  China [23]
47  Flag of Slovenia.svg Ljubljana 2006July 6 – July 18Flag of the People's Republic of China.svg  China [24]
48  Flag of Vietnam.svg Hanoi 2007July 19 – July 31Flag of Russia.svg  Russia [25]
49  Flag of Spain.svg Madrid 2008July 10 – July 22Flag of the People's Republic of China.svg  China [26]
50  Flag of Germany.svg Bremen 2009July 10 – July 22Flag of the People's Republic of China.svg  China [27]
51  Flag of Kazakhstan.svg Astana 2010July 2 – July 14Flag of the People's Republic of China.svg  China [28]
52  Flag of the Netherlands.svg Amsterdam 2011July 13 – July 24Flag of the People's Republic of China.svg  China [29]
53  Flag of Argentina.svg Mar del Plata 2012July 4 – July 16Flag of South Korea.svg  South Korea [30]
54  Flag of Colombia.svg Santa Marta 2013July 18 – July 28Flag of the People's Republic of China.svg  China [31]
55  Flag of South Africa.svg Cape Town 2014July 3 – July 13Flag of the People's Republic of China.svg  China [32]
56  Flag of Thailand.svg Chiang Mai 2015July 4 – July 16Flag of the United States.svg  United States [33]
57  Flag of Hong Kong.svg Hong Kong 2016July 6 – July 16Flag of the United States.svg  United States [34]
58  Flag of Brazil.svg Rio de Janeiro 2017July 12 – July 23Flag of South Korea.svg  South Korea [35]
59  Flag of Romania.svg Cluj-Napoca 2018July 3 – July 14Flag of the United States.svg  United States [36]
60  Flag of the United Kingdom.svg Bath 2019July 11 – July 22Flag of the People's Republic of China.svg  China
Flag of the United States.svg  United States 		[37]
61  Flag of Russia.svg St. Petersburg (online) [n 3] [n 4] 2020September 19 – September 28Flag of the People's Republic of China.svg  China [41] [42]
62  Flag of Russia.svg St. Petersburg (online) [n 5] [n 4] 2021July 14 – July 24Flag of the People's Republic of China.svg  China [44]
63  Flag of Norway.svg Oslo (hybrid)2022July 6 – July 16Flag of the People's Republic of China.svg  China [45]
64  Flag of Japan.svg Chiba 2023July 2 – July 13Flag of the People's Republic of China.svg  China [46]
65  Flag of the United Kingdom.svg Bath [n 6] 2024July 11 – July 22TBD [48]
66  Flag of Australia (converted).svg (TBA)2025TBDTBD [49]
67  Flag of the People's Republic of China.svg Shanghai 2026TBDTBD [50]
68  Flag of Hungary.svg (TBA)2027TBDTBD [51]

See also

Notes

  1. ↑ 1991 marked the Soviet Union's last participation. From 1992, former Soviet Union countries – including Russia – entered separately. [11]
  2. ↑ At the time of the Olympiad, Hong Kong was under British colonial rule.
  3. ↑ Following the COVID-19 pandemic, the 2020 IMO was postponed from July to September hoping to keep the competition in-person. Then it was changed to a virtual event. [38]
  4. 1 2 For the two virtual IMOs, all problems were selected by the Problem Selection Committee instead of the Jury made up of all team leaders, and problems were sent to the team leaders shortly before the exams for translation. Each team took the IMO exam at a national exam centre, and starting times of all exams were in the interval between 07:30 and 12:00 UTC (both ends included) of each exam day. An IMO Commissioner of another nationality was present at each centre to oversee the whole exam, and the IMO Chief Invigilator monitored all exams using webcams. [39] [40]
  5. ↑ The 2021 IMO was originally to be held in Washington D.C., US. The US gave up hosting after the COVID-19 pandemic had started. [43] [38]
  6. ↑ The originally determined location for hosting the 2024 IMO was Ukraine. Due to the recent conflicts between the country and Russia, the location was changed to Bath, in which the 2019 IMO was hosted. [47]

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References

  1. 1 2 Unofficial events were held in Finland and Luxembourg in 1980. "UK IMO register". IMO register. Archived from the original on 2001-10-16. Retrieved 2011-06-17.
  2. ↑ "More IMO Facts". Archived from the original on 2001-08-20. Retrieved 2008-03-05.
  3. ↑ "Singapore International Mathematical Olympiad (SIMO) Home Page". Singapore Mathematical Society. Archived from the original on 2003-03-27. Retrieved 2008-02-04.
  4. ↑ "1st IMO 1959". International Mathematical Olympiad. Archived from the original on 2011-09-25. Retrieved 2011-06-20.
  5. 1 2 3 "Timeline". International Mathematical Olympiad. Archived from the original on 2007-10-11. Retrieved 2011-06-20.
  6. ↑ "International Mathematical Olympiad: Democratic People's Republic of Korea". Archived from the original on 2007-10-12. Retrieved 2010-07-17.
  7. ↑ Geoff Smith. "International Mathematical Olympiad 2010 UK leader's report, Almaty and Astana, Kazakhstan". UK IMO Register. Archived from the original on 2023-09-04. Retrieved 2023-09-06.
  8. ↑ "North Korea's disqualification at IMO 2010". Art of Problem Solving. Archived from the original on 2023-10-21. Retrieved 2023-09-06.
  9. ↑ Adam McBride. "34th International Mathematical Olympiad, Istanbul, Turkey, UK leader's report". UK IMO Register. Archived from the original on 2023-09-04. Retrieved 2023-11-24.
  10. ↑ Google Europe Blog: Giving young mathematicians the chance to shine Archived 2016-03-08 at the Wayback Machine . Googlepolicyeurope.blogspot.com (2011-01-21). Retrieved on 2013-10-29.
  11. 1 2 "Ranking of countries". International Mathematical Olympiad. Archived from the original on 2017-08-04. Retrieved 2011-06-20.
  12. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 "US teams at the IMO". Mathematical Association of America. Archived from the original on 2011-07-27. Retrieved 2011-06-19.
  13. ↑ "IMO 1995". Canadian Mathematical Society. Archived from the original on 2008-02-29. Retrieved 2008-03-17.
  14. ↑ "IMO 1996". Canadian Mathematical Society. Archived from the original on 2008-02-23. Retrieved 2008-03-17.
  15. ↑ "IMO 1997" (in Spanish). Argentina. Archived from the original on 1998-12-05. Retrieved 2008-03-17.
  16. ↑ "IMO 1998". Republic of China. Archived from the original on 1998-12-05.
  17. ↑ "IMO 1999". Canadian Mathematical Society. Archived from the original on 2008-02-23. Retrieved 2008-03-17.
  18. ↑ "IMO 2000". Wolfram. Archived from the original on 2001-07-01. Retrieved 2008-03-17.
  19. ↑ "IMO 2001". Canadian Mathematical Society. Archived from the original on 2011-05-18. Retrieved 2008-03-17.
  20. ↑ Andreescu, Titu (2004). USA & International Mathematical Olympiads 2002. Mathematical Association of America. ISBN   978-0-88385-815-8.
  21. ↑ "IMO 2003". Japan. Archived from the original on 2008-03-06. Retrieved 2008-03-17.
  22. ↑ "IMO 2004". Greece. Archived from the original on 2004-06-27.
  23. ↑ "IMO 2005". Mexico. Archived from the original on 2005-07-11.
  24. ↑ "IMO 2006". Slovenia. Archived from the original on 2009-02-28. Retrieved 2008-03-17.
  25. ↑ "IMO 2007". Vietnam. Archived from the original on 2009-02-12. Retrieved 2008-03-17.
  26. ↑ "IMO 2008". Spain. Archived from the original on 2008-02-26. Retrieved 2008-03-17.
  27. ↑ "IMO 2009" (in German). Germany. Archived from the original on 2013-06-05. Retrieved 2008-03-17.
  28. ↑ "51st IMO 2010". IMO. Archived from the original on 2007-12-13. Retrieved 2011-07-22.
  29. ↑ "52nd IMO 2011". IMO. Archived from the original on 2007-12-13. Retrieved 2011-07-22.
  30. ↑ "53rd IMO 2012". IMO. Archived from the original on 2008-07-24. Retrieved 2011-07-22.
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  32. ↑ "55th IMO 2014". IMO. Archived from the original on 2011-10-14. Retrieved 2016-09-10.
  33. ↑ "56th IMO 2015". IMO. Archived from the original on 2011-10-14. Retrieved 2016-09-10.
  34. ↑ "57th IMO 2016". IMO. Archived from the original on 2012-10-13. Retrieved 2016-09-10.
  35. ↑ "58th IMO 2017". IMO. Archived from the original on 2012-10-13. Retrieved 2016-09-10.
  36. ↑ "59th IMO 2018". IMO. Archived from the original on 2014-08-29. Retrieved 2016-09-10.
  37. ↑ "60th IMO 2019". IMO. Archived from the original on 2014-10-07. Retrieved 2016-09-10.
  38. 1 2 "Virtual IMO 2020 – Russia". International Mathematical Olympiad Foundation. 2020-07-11. Archived from the original on 2023-06-09. Retrieved 2022-07-16.
  39. ↑ "IMO 2020 (Virtual) Annual Regulations (June 2020)" (PDF). Archived (PDF) from the original on 2020-06-30.
  40. ↑ "IMO 2021 (Virtual) Annual Regulations (May 5 2021)" (PDF). Archived from the original (PDF) on 2021-07-12.
  41. ↑ "61st IMO 2020". IMO. Archived from the original on 2016-09-23. Retrieved 2020-11-10.
  42. ↑ "Annual Regulations for IMO 2020" (PDF). Archived (PDF) from the original on 2020-04-21. Retrieved 2020-04-22.
  43. ↑ "Original IMO 2021 site". Archived from the original on 2020-04-22.
  44. ↑ "62nd IMO 2021". IMO. Archived from the original on 2020-10-19. Retrieved 2016-11-17.
  45. ↑ "63rd IMO 2022". IMO. Archived from the original on 2017-08-02. Retrieved 2017-07-25.
  46. ↑ "64th IMO 2023". IMO. Archived from the original on 2018-09-09. Retrieved 2018-09-08.
  47. ↑ "IMO 2024". IMO. Archived from the original on 2022-06-08. Retrieved 2023-07-12.
  48. ↑ "65th IMO 2024". IMO. Archived from the original on 2022-07-15. Retrieved 2022-06-11.
  49. ↑ "66th IMO 2025". IMO. Archived from the original on 2020-07-01. Retrieved 2024-02-24.
  50. ↑ "67th IMO 2026". IMO. Archived from the original on 2023-07-12. Retrieved 2023-06-30.
  51. ↑ "68th IMO 2027". IMO. Archived from the original on 2024-01-07. Retrieved 2024-01-15.

Bibliography

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