Mathematician Liu Hui

coach bags Liu Hui (born around 250 AD), is the history of mathematics a very great mathematicians, history of mathematics in the world, also occupies an outstanding position. His masterpiece "s Jiu"and"calculated by the island", is the most valuable mathematical heritage.
louis vuitton outlet "Liu Hui" beginning approximately in the Eastern Han Dynasty, a total of 246 Problem. In many ways: such as solving simultaneous equations, fractional arithmetic, the number of positive and negative operations, the volume area of geometry, etc., the list is the world's advanced, but more primitive method, the lack of the necessary proof, and Liu Hui is this Have been added proof. In the proof, showing his many creative contributions.
burberry outlet He is the first to propose the concept of decimal fraction of people, and used to represent the decimal fraction of the cube root of irrational numbers. In algebra, he correctly pointed out that the concept of positive and negative numbers and addition and subtraction of the law; improve the solution of linear equations. In geometry, the proposed "cutting circle method", about the circumference circumscribed by internal or exhaustion of a regular polygon and the circumference of circular area method. He used the cutting circle method scientifically obtained pi π = 3.14 results. Liu Hui in the cutting circle method in the proposed "fine cut indemnity, the indemnity loss less, cutting the cut so that they can not cut, the fit and nothing to lose and carry round", this limit can be regarded as the concept of ancient Chinese masterpiece .
laguna beach jeans "considered by the island, "a book, the nine Selected Liu Hui carefully measured, and these questions of creativity, complexity and representative, have attracted the attention of the West at that time. Liu Hui quick thinking, flexible approach, both to promote reasoning and intuitive ideas. He is the earliest clear the way advocate the use of logical reasoning to prove mathematical propositions of the people. Liu Hui's life is hard to explore the life of mathematics. Although he low status, but a noble character. He is not fame of the mediocre, but insatiable in learning a great man, he left us precious wealth of the Chinese nation.