On September 27th, 2020, the results of the 6th1International Mathematical Olympiad (IMO) were announced. China ranked first with 5 gold 1 silver and a total score of 2 15. This is the second consecutive year that China won the IMO championship after winning the first overall score on 20 19.
IMO official website showed that China won the first place in the team with a total score of 2 15, 30 points ahead of the second Russian team and 32 points ahead of the third American team.
In addition to the first overall score of the team, the China team also swept the top three in the individual performance ranking, and at the same time, six China players who participated in this year also won five gold medals, 1 silver, slightly lower than last year (last year was six gold medals).
According to IMO reward rules, the gold medal score is 3 1, the silver medal score is 24, and the bronze medal score is 15.
Li Jinmen from a middle school in Chongqing won the gold medal with 42 points. Yi Jia from a middle school in Yueqing, Yi Jia from a middle school affiliated to the National People's Congress, Liang from a middle school in Hang Cheng and Rao Rui from a middle school affiliated to South China Normal University also won the gold medal with 40 points, 37 points, 36 points, 365,438+0 points respectively. Yan from the middle school attached to South Normal University won the silver medal with 29 points.
Students who receive these honors will be admitted to Tsinghua and Peking University. China has won 162 gold, 36 silver and 6 bronze since it first entered the competition in 1985.
IMO was originally scheduled to be held in St. Petersburg, Russia, but it was held online due to the epidemic. September 2 1 and 22/are the official competition dates, with 6 16 players from 104 countries and regions participating.
The International Mathematical Olympiad is the longest event in the International Scientific Olympiad. From 65438 to 0959, the first IMO was held in Romania, and the participating countries included seven Eastern European countries.
Since then IMO has never stopped except 1980. With the increasing influence of IMO, the number of participating countries is also increasing. In recent years, it has reached about 100, which basically includes countries with high level of mathematics education in middle schools.
Each participating country can send up to 6 players, a team leader, a deputy team leader and observers. Participants must be under the age of 20 when participating in the competition, and the highest educational level is middle school, but there is no limit to the number of times each player participates in IMO.
Since the 24th session (1983), IMO papers have been composed of 6 questions, with 7 points for each question, out of 42 points. The competition is divided into two days, and each participant has 4.5 hours to solve three problems (from 9: 00 am to 65438+ 0: 30 pm).
Usually 1 questions (i.e. 1 and 4 questions) are the simplest, 2 questions (i.e., 2 and 5 questions) are moderate, and 3 questions (i.e., 3 and 6 questions) are the most difficult.
To understand the problem, you don't need to have knowledge outside the recognized middle school mathematics curriculum, but to solve the problem, you need to know a lot of knowledge outside the middle school curriculum, which does not belong to the university curriculum. Generally it can be divided into algebra, geometry, number theory and combinatorial mathematics.
IMO topic is rooted in middle school mathematics, but it has been expanded in specific knowledge, which requires a lot of theorems to be recited and requires higher methods. Generally speaking, IMO topics are difficult and flexible. To solve these problems, participants generally don't need advanced mathematics knowledge (such as calculus), but they need correct thinking mode, good mathematics literacy and basic skills, perseverance and certain creativity.
In principle, IMO does not encourage players to use mathematical knowledge and tools outside the scope of middle school to solve problems, and will fully consider this when determining the topic.
In view of the above characteristics, IMO test questions and their multiple-choice questions, together with some mathematical competition and training questions from various countries, represent a special kind of mathematics between elementary mathematics and advanced mathematics. Competition mathematics.