Blaise Pascal (1623, June 19- 1662, August 19) is a French mathematician, physicist and thinker.

Born in Claremont-Ferrand, he died young in Paris. My father is a mathematician and a member of Mei Sen Association, which has a great influence on his early education. He has been smart and studious since he was a child. He began to learn geometry at the age of 12, that is, he read through Euclid's Elements of Geometry and mastered it. 16 years old, he discovered the famous Pascal's hexagon theorem: the intersection of three pairs of opposite sides of a hexagon inscribed with a quadratic curve. It is said that he later deduced more than 400 inferences from this. /kloc-when he was 0/7 years old, he wrote On Conic Curves (1640), which is a paper about Gilad Girard Desargues's working experience in projective geometry, including the above theorems. These works are the greatest progress of conic theory since Apollonius. 1642, he designed and made an automatic addition and subtraction computing device, which was called the first digital calculator in the world, and provided the basic principle for computer design in the future. 1654 began to study several aspects of mathematical problems, deeply discussed the principle of inseparability in infinitesimal analysis, obtained a general method to find the area and center of gravity surrounded by different convolution, solved the simple pendulum problem with the principle of integral calculus, and completed it on the simple pendulum in 1658. The manuscript of his thesis is a great inspiration for gottfried leibniz to establish calculus. While studying the properties of binomial coefficients, he wrote Arithmetic Triangle and submitted it to the Paris Academy of Sciences. Later, it was included in his complete works and published in 1665. The binomial coefficient given in it was later called Pascal Triangle, but it was actually known by Jia Xian of China about 1 100. Talking with pierre fermat about the allocation of gambling money has a great influence on the development of early probability theory. He also made a mercury barometer (1646) and wrote a paper on liquid balance, air weight and density (1651-kloc-0/654). Since 1655, he has lived in seclusion in a monastery and wrote classic works such as Random Thoughts (1658).