List of International Congresses of Mathematicians Plenary and Invited Speakers

This is a list of International Congresses of Mathematicians Plenary and Invited Speakers. Being invited to talk at an International Congress of Mathematicians has been called "the equivalent, in this community, of an induction to a hall of fame."^[1] The current list of Plenary and Invited Speakers presented here is based on the ICM's post-WWII terminology, in which the one-hour speakers in the morning sessions are called "Plenary Speakers" and the other speakers (in the afternoon sessions) whose talks are included in the ICM published proceedings are called "Invited Speakers". In the pre-WW II congresses the Plenary Speakers were called "Invited Speakers".

• During the 1900 Congress in Paris, France, David Hilbert announced his famous list of Hilbert's problems.^[2]
• At the 1954 Congress of Mathematicians in Amsterdam, Richard Brauer announced his program for the classification of finite simple groups.^[3]
• Alexander Grothendieck in his plenary lecture at the 1958 Congress outlined his programme "to create arithmetic geometry via a (new) reformulation of algebraic geometry, seeking maximal generality."^[4]
• At the 1962 Congress in Stockholm Kiyosi Itô lectured on how to combine differential geometry and stochastic analysis, and this led to major advances in the 60s and 70s.^[5]

This list inventories the mathematicians who were the most invited to speak to an ICM.

Rank	Name	#	Years	Nationality
1	Jacques Hadamard	9	1897, 1900, 1904, 1908, 1912, 1920, 1928, 1932, 1950	France
2	Émile Borel	7	1897, 1900, 1904, 1908, 1912, 1928, 1936	France
2	Jules Drach	7	1900, 1912, 1920, 1924, 1928, 1932, 1936	France
4	Elie Cartan	6	1900, 1920, 1924, 1928, 1932, 1936	France
4	Gino Loria	6	1897, 1904, 1908, 1912, 1928, 1932	Italy
4	Vito Volterra	6	1900, 1904, 1908, 1912, 1920, 1928	Italy
7	Henri Fehr	5	1904, 1908, 1912, 1924, 1932	Switzerland
7	Rudolf Fueter	5	1920, 1924, 1928, 1932, 1936	Switzerland
7	Yuri Manin	5	1966, 1970, 1978, 1986, 1990	Russia  Germany
7	Mihailo Petrović	5	1908, 1912, 1924, 1928, 1932	Serbia
7	Cyparissos Stephanos	5	1897, 1900, 1904, 1908, 1912	Greece
7	Carl Størmer	5	1908, 1920, 1924, 1932, 1936	Norway
7	Gheorghe Țițeica	5	1908, 1912, 1924, 1932, 1936	Romania
7	Stanisław Zaremba	5	1908, 1920, 1924, 1932, 1936	Poland

See also

• Plenary Speakers (in Russian), contribution titles, and URLs
• International Mathematical Union: Proceedings 1893-2022

• "International Mathematical Union (IMU)". mathunion.org. Retrieved 2015-09-06.
• "ICM Main invited speakers". www-history.mcs.st-and.ac.uk. Retrieved 2015-09-06.