International Congress of Mathematicians

International Congress of Mathematicians
Status	Active
Genre	Mathematics conference
Frequency	Quadrennial
Country	Varies
Years active	1897–present
Inaugurated	August 1897
Founder	Felix Klein Georg Cantor
Most recent	August 2014
Previous event	August 2010
Next event	2018
Website
www.mathunion.org/activities/icm/

The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU).

The Fields Medals, the Nevanlinna Prize, the Gauss Prize, and the Chern Medal are awarded during the congress' opening ceremony. Each congress is memorialized by a printed set of Proceedings recording academic papers based on invited talks intended to be relevant to current topics of general interest.

Felix Klein and Georg Cantor are credited with putting forward the idea of an international congress of mathematicians in the 1890s. The first International Congress of Mathematicians was held in Zurich in August 1897. The organizers included such prominent mathematicians as Luigi Cremona, Felix Klein, Gösta Mittag-Leffler, Andrey Markov, and others. The congress was attended by 208 mathematicians from 16 countries, including 12 from Russia and 7 from the U.S.A.

During the 1900 congress in Paris, France, David Hilbert announced his famous list of 23 unsolved mathematical problems, now termed Hilbert's problems. Moritz Cantor and Vito Volterra gave the two plenary lectures at the start of the congress.

At the 1904 ICM Gyula Kőnig delivered a lecture where he claimed that Cantor's famous continuum hypothesis was false. An error in Kőnig's proof was discovered by Ernst Zermelo soon thereafter. Kőnig's announcement at the congress caused considerable uproar, and Klein had to personally explain to the Grand Duke of Baden (who was a financial sponsor of the congress) what could cause such an unrest among mathematicians.

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