IMO Problems and Solutions, with authors

This page lists the authors of the problems of the IMO.

1959

1. proposed by Poland
2. proposed by Romania
3. proposed by Hungary
4. proposed by Hungary
5. proposed by Romania
6. proposed by Czechoslovakia

1960

1. proposed by Bulgaria
2. proposed by Hungary
3. proposed by Romania
4. proposed by Hungary
5. proposed by Czechoslovakia
6. proposed by Bulgaria
7. proposed by Eastern Germany

1961

1. proposed by Hungary
2. proposed by Poland
3. proposed by Bulgaria
4. proposed by Eastern Germany
5. proposed by Czechoslovakia
6. proposed by Romania

1962

1. proposed by Poland
2. proposed by Hungary
3. proposed by Czechoslovakia
4. proposed by Romania
5. proposed by Bulgaria
6. proposed by Eastern Germany
7. proposed by USSR

1963

1. proposed by Czechoslovakia
2. proposed by USSR
3. proposed by Hungary
4. proposed by USSR
5. proposed by Eastern Germany
6. proposed by Hungary

1964

1. proposed by Czechoslovakia
2. proposed by Hungary
3. proposed by Yugoslavia
4. proposed by Hungary
5. proposed by Romania
6. proposed by Poland

1965

1. proposed by Yugoslavia
2. proposed by Polan
3. proposed by Czechoslovakia
4. proposed by USSR
5. proposed by Romania
6. proposed by Poland

1966

1. proposed by USSR
2. proposed by Hungary
3. proposed by Bulgaria
4. proposed by Yugoslavia
5. proposed by Czechoslovakia
6. proposed by Poland

1967

1. proposed by Poland
2. proposed by Czechoslovakia
3. proposed by United Kingdom
4. proposed by Italy
5. proposed by USSR
6. proposed by Hungary

1968

1. proposed by Romania
2. proposed by Czechoslovakia
3. proposed by Bulgaria
4. proposed by Poland
5. proposed by Eastern Germany
6. proposed by United Kingdom

1969

1. proposed by Eastern Germany
2. proposed by Hungary
3. proposed by Poland
4. proposed by Netherlands
5. proposed by Mongolia
6. proposed by USSR

1970

1. proposed by Poland
2. proposed by Romania
3. proposed by Sweden
4. proposed by Czechoslovakia
5. proposed by Bulgaria
6. proposed by USSR

1971

1. proposed by Hungary
2. proposed by USSR
3. proposed by Poland
4. proposed by Netherlands
5. proposed by Bulgaria
6. proposed by Sweden

1972

1. proposed by USSR
2. proposed by Netherlands
3. proposed by United Kingdom
4. proposed by Netherlands
5. proposed by Bulgaria
6. proposed by United Kingdom

1973

1. proposed by Czechoslovakia
2. proposed by Poland
3. proposed by Sweden
4. proposed by Yugoslavia
5. proposed by Poland
6. proposed by Sweden

1974

1. proposed by USA
2. proposed by Finland
3. proposed by Romania
4. proposed by Bulgaria
5. proposed by Netherlands
6. proposed by Sweden

1975

1. proposed by Czechoslovakia
2. proposed by United Kingdom
3. proposed by Netherlands
4. proposed by USSR
5. proposed by USSR
6. proposed by United Kingdom

1976

1. proposed by Czechoslovakia
2. proposed by Finland
3. proposed by Netherlands
4. proposed by USA
5. proposed by Netherlands
6. proposed by United Kingdom

1977

1. proposed by Netherlands
2. proposed by Vietnam
3. proposed by Netherlands
4. proposed by United Kingdom
5. proposed by Eastern Germany
6. proposed by Bulgaria

1978

1. proposed by Cuba
2. proposed by USA
3. proposed by United Kingdom
4. proposed by USA
5. proposed by France
6. proposed by Netherlands

1979

1. proposed by Western Germany
2. proposed by Bulgaria
3. proposed by USSR
4. proposed by USA
5. proposed by Israel
6. proposed by Eastern Germany

1981

1. proposed by United Kingdom
2. proposed by Western Germany
3. proposed by Netherlands
4. proposed by Belgium
5. proposed by USSR
6. proposed by Finland

1980

(There was no IMO in 1980.)

1982

1. proposed by United Kingdom
2. proposed by Netherlands
3. proposed by A.Grishkov, USSR
4. proposed by United Kingdom
5. proposed by Netherlands
6. proposed by Vietnam

1983

1. proposed by United Kingdom
2. proposed by I.F.Sharygin, USSR
3. proposed by Western Germany
4. proposed by Belgium
5. proposed by Poland
6. proposed by USA

1984

1. proposed by Western Germany
2. proposed by Netherlands
3. proposed by Romania
4. proposed by Romania
5. proposed by Mongolia
6. proposed by Poland

1985

1. proposed by United Kingdom
2. proposed by Australia
3. proposed by Netherlands
4. proposed by Mongolia
5. proposed by USSR
6. proposed by Sweden

1986

1. proposed by Western Germany
2. proposed by Gengzhe Chang and Dongxu Qi, China
3. proposed by Elias Wegert, Eastern Germany
4. proposed by Iceland
5. proposed by United Kingdom
6. proposed by Konrad Engel from Eastern Germany

1987

1. proposed by Western Germany
2. proposed by I.A.Kushnir, USSR
3. proposed by Western Germany
4. proposed by Vietnam
5. proposed by Eastern Germany
6. proposed by V.F.Lev, USSR

1988

1. proposed by Lucien Kieffer from Luxembourg
2. proposed by Czechoslovakia
3. proposed by United Kingdom
4. proposed by Ireland
5. proposed by Greece
6. proposed by Western Germany

1989

1. proposed by Philippines
2. proposed by Australia
3. proposed by Hendrikus Gerardus Derksen, Netherlands
4. proposed by Iceland
5. proposed by Sweden
6. proposed by Professor Marcin Kuczma, university of Warsaw, Poland

1990

1. proposed by India
2. proposed by Czechoslovakia
3. proposed by Laurentin Panaitopol, university of Bucharest Romania
4. proposed by Turkey
5. proposed by Germany
6. proposed by Hendrikus Gerardus Derksen, Netherlands

1991

1. proposed by USSR
2. proposed by Romania
3. proposed by Chengzhang Li, China
4. proposed by USA
5. proposed by Johan Yebbou, France
6. proposed by Hendrikus Gerardus Derksen, Netherlands

1992

1. proposed by New Zealand
2. proposed by India
3. proposed by Chengzhang Li, China
4. proposed by Johan Yebbou, France
5. proposed by Italy
6. proposed by Tony Gardiner from United Kingdom

1993

1. proposed by Ireland
2. proposed by David Monk, formerly University of Edinburgh, United Kingdom
3. proposed by Finland
4. proposed by F.Y.R. Macedonia
5. proposed by Elias Wegert, Germany
6. proposed by Netherlands

1994

1. proposed by Vincent Lafforgue, France
2. proposed by Hans Lausch, Monash University, Australia and Armenia independently
3. proposed by Romania
4. proposed by Australia
5. proposed by United Kingdom
6. proposed by Finland

1995

1. proposed by Bulgaria
2. proposed by Nazar Agakhanov, Russia
3. proposed by Karel Horak from Czech Republic
4. proposed by Professor Marcin Kuczma, university of Warsaw, Poland
5. proposed by New Zealand
6. proposed by Professor Marcin Kuczma, university of Warsaw, Poland

1996

1. proposed by Finland
2. proposed by Canada
3. proposed by Romania
4. proposed by Alexander S. Golovanov, Russia
5. proposed by Nairi M. Sedrakyan from Armenia
6. proposed by Laurent Rosaz, France

1997

1. proposed by Belarus
2. proposed by David Monk, formerly University of Edinburgh, United Kingdom
3. proposed by Russia
4. proposed by Iran
5. proposed by Czech Republic
6. proposed by Giedrius Alkauskas, Lithuania

1998

1. proposed by Charles Leytem, high school Dierkirch, Luxembourg
2. proposed by India
3. proposed by Belarus
4. proposed by David Monk university Edinbourg
5. proposed by Ukraine
6. proposed by Nikolai Nikolov and Oleg Mushkarov Institut Mathematiques Informatiques Academie des Sciences Sofia Bulgarie

1999

1. proposed by Jan Willemson university of Tartu, Estonia
2. proposed by Professor Marcin Kuczma, university of Warsaw, Poland
3. proposed by E.Barabanov and I.Voronovich, Belarus
4. proposed by Taiwan
5. proposed by P.Kozhevnikov, Russia
6. proposed by Japan

2000

1. proposed by Sergeerlov, Saint-Petersbourg Russia
2. proposed by Titu Andreescu from USA
3. proposed by Belarus
4. proposed by Sandor Dobos professor lyc Fazekas Mihaly, Budapest, Hungary
5. proposed by Valerii Senderov, Moscou Russia
6. proposed by Lev and Tatiana Emelianovii, Kaluga Russia

2001

1. proposed by Hojoo Lee university Kwangwoon, Seoul Korea
2. proposed by Hojoo Lee university Kwangwoon, Seoul Korea
3. proposed by Dr.Christian Bey university of Rostock, Germany
4. proposed by Professor Bill Sands university of Calgary, Canada
5. proposed by Toshio Seimiya, Kawasaki Japan / see cruxmathematicorum problem 2501
6. proposed by Alexander Ivanov, Bulgaria

2002

1. proposed by Federico Ardila, university of Los Andes, Bogota Colombia
2. proposed by Hojoo Lee university Kwangwoon, Seoul Korea
3. proposed by Laurentin Panaitopol, university of Bucharest Romania
4. proposed by Mihai Manea, Galati Romania
5. proposed by B.J.Venkatachala, professor university of Indian Institut of Sciences, Bangalore India
6. proposed by Vyacheslav Yasinskiy, Vinnitsa Pedagogical University, Vinnitsa Ukraine

2003

1. proposed by Carlos Gustavo Moreira, Brasilia
2. proposed by Bulgaria
3. proposed by Poland
4. proposed by Finland
5. proposed by Ireland
6. proposed by Johan Yebbou Professeur Mathematiques Speciales MP* in France

2004

1. proposed by Valentin Vornicu and Dinu Serbanescu, Romania
2. proposed by Hojoo Lee university Kwangwoon, Seoul Korea
3. proposed by Jan Villemson, Estonia
4. proposed by Hojoo Lee university Kwangwoon, Seoul Korea
5. proposed by Poland
6. proposed by Iran