The Poincare conjecture, one of the "mathematical problems in the seventh century", has been completely solved by scientists recently, and it is the "final work" of China scientists. Professor Zhu Xiping of Sun Yat-sen University and Professor Cao Huaidong, a mathematician living in the United States and a professor in Tsinghua University, gave a complete proof of the Poincare conjecture in a paper of more than 300 pages.

Mathematician Yang Le said that if divided by 100%, the contribution of American mathematician Hamilton is above 50%, and the contribution of Russian mathematician perelman who put forward the solution to this conjecture is around 25%. "The contribution of China scientists including Qiu Chengtong, Zhu Xiping and Cao Huaidong is about 30%."

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Poincare conjecture is a conjecture put forward by French mathematician Poincare, and it is the seven Millennium prize puzzles provided by Cray Institute of Mathematics. Russian mathematician grigory perelman proved the three-dimensional situation around 2003. In 2006, the mathematical community finally confirmed that perelman's proof solved Poincare's conjecture.

Poincare conjecture is a proposition of fundamental significance in topology, which will help people to better study three-dimensional space, and the result will deepen people's understanding of manifold properties.

Baidu Encyclopedia-Poincare conjecture