1. When Hua walks due to illness or disability in his left leg, he should draw a big circle on his left leg and take a small step on his right leg. He humorously joked that his steps were circular and tangential.

2. Ju Lushi was the first famous mathematician in ancient Greece. The height of the pyramids was calculated by ingenious methods, which amazed the ancient Egyptian kings.

Archimedes put the crown and the same real crown into a basin of water and measured the overflowing water. People know that this crown is lighter than the real crown, which shows that it is doped with metal.

4. Zu Chongzhi exhibited famous classic works at that time, insisted on seeking truth from facts, and made a comparative analysis of a large number of materials calculated by himself. At the age of 33, he successfully compiled Da Ming Li, which opened a new era in calendar history.

Chen Jingrun, a great mathematician, loves reading very much. He is absorbed in reading. Once, he was reading in the library. When the library was about to close, the security guard shouted in the library, "Hello? It's closing. " I called several times, but I couldn't hear Chen Jingrun's voice, because he was fascinated by reading. As a result, Chen Jingrun was locked up until the next library opened.

1. A mathematician refers to a person who has a deep understanding of mathematics and applies what he has learned to his work (especially solving mathematical problems). Mathematicians focus on numbers, data, sets, structures, spaces and changes.

Mathematicians who focus on solving problems outside the field of pure mathematics are called applied mathematicians. They used their special knowledge and professional methods to solve many remarkable problems in the field of science. Because of the wide range of concerns, theoretical system and fixed-point structure. Applied mathematicians often study and make mathematical models.

2. Modern China world famous mathematician.

Hu Mingfu, Feng Zuxun, Jiang Lifu, Chen, Xiong Qinglai, Su, Xu,, Wu Wenjun, Chen Jingrun, Feng Kang, Zhou Weiliang, Xiao Yintang, Kai Zhong Lai, Xiang Wuzhong, Xiang Wuyi, Gong Sheng, Wang Xianghao, Wu Hongxi, Yan Zhida and Lu.

Reference: Hua _ Baidu Encyclopedia Mathematicians _ Baidu Encyclopedia