Olympiad Olympiads for the summer and winter games, and such usage particularly for the Winter Olympics is not consistent with the numbering discussed above. The U.S. Olympic Committee often uses the term "quadrennium", which it claims refers to the same four-year period. However, it indicates these quadrennia in calendar years, starting with the first year after the Summer Olympics and ending with the year the next Olympics are held. This would suggest a more precise period of four years, but the 2001–2004 Quadrennium would then not be exactly the same period as the XXVIIth Olympiad. A "Cultural Olympiad" is a concept
International Mathematical Olympiad selection process International Mathematical Olympiad selection process This article describes the selection process, by country, for entrance into the International Mathematical Olympiad. The International Mathematical Olympiad (IMO) is an annual mathematics olympiad for students younger than 20 who have not started at university. Each year, participating countries send at most 6 students. The selection process varies between countries, but typically involves several rounds of competition, each progressively more difficult, after which the number of candidates is repeatedly reduced until the final 6 are chosen. Many countries also run training events for IMO potentials, with the aim of improving performance as well as