2. Up to now, the (60) carry system is the largest one used by human beings, and there are still many remains in Babylonian characters and clay tablets.
3. A Russian female mathematician (Sophia Kovalevskaya) was the first woman to get a doctorate in mathematics.
4.1In August, 974, (Ding Zhaozhong) discovered a new particle, J particle, after ten years of vector meson experiments, and won the Nobel Prize in Physics, which is the third China scholar to win this honor after Li Zhengdao and Yang Zhenning.
5./KOOC-0/96/KOOC-0/April/KOOC-0/2, the former Soviet astronaut (Gagarin) traveled in space for 89 minutes in the 4.75-ton "Dongfang No.1" spacecraft, becoming the first astronaut.
6. In the book "Notes on Nine Chapters of Arithmetic", Liu Hui founded the calculation method of pi.
7. In 2002, the International Congress of Mathematicians was successfully held in Beijing. During the conference, the "China Youth Mathematics Forum" was held, and the famous mathematician (Chen Shengshen) wrote the inscription "Mathematics is interesting" at the request of the children.