Vladimir Arnold, one of the most important mathematicians of the 20th century, died Thursday in France. Among many awards and recognitions Arnold received in his professional career, he was presented the Crafoord Prize in 1982 and in 2001, the World Prize in Mathematics.

He is also known as the coauthor of the KAM theorum of classical mechanics, for which the ‘A’ in KAM is his initial. The theorem deals with mechanical trajectories.

In his later years, he worked at the Steklov Mathematical Institute in Moscow and the Moscow State University. Arnold was 72 years old.