Did Descartes and Fermat do anything? Please, 3Q.

I hope it helps you. Fermat (also translated as Fermat) 160 1 Yu 17 was born in Beaumont de Lomagne near Toulouse in southern France in August. His father Dominic Fermat opened a large leather goods store in the local area, and the industry was very rich, which made Fermat live in a rich and comfortable environment since he was a child. Fermat's father was respected by people because he was rich and well-run, so he was awarded the title of local affairs consultant. However, Fermat did not feel much superiority because of his rich family when he was young. Fermat's mother's name is Clara de Rogge, and she is a nobleman in a robe. Dominic's great wealth and Rogge's big noble constitute Fermat's extremely rich social status. Fermat was taught by his uncle Pierre when he was a child, and received a good enlightenment education, which cultivated his extensive interests and hobbies and also had an important influence on his character. It was not until 14 years old that Fermat entered Beaumont de Lomagne College. After graduation, he studied law at the University of Orleans and the University of Toulouse. In France in the17th century, men's most exquisite occupation was to be lawyers, so it became a fashion and admirable for men to study law. Interestingly, France has created good conditions for those "quasi-lawyers" who are productive and lack qualifications to become lawyers as soon as possible. 1523, Francois I organized and established a special organ to sell officials and titles, and publicly sold officials and titles. Once this social phenomenon of selling officials and titles came into being, in order to meet the needs of the times, it was out of control and continued to this day. On the one hand, selling official titles caters to the rich, allowing them to obtain official positions and improve their social status, on the other hand, it also improves the government's financial situation. Therefore, in the17th century, except court officials and military attache, any official position can be bought and sold. Until today, the duties of court clerks, notaries, messengers, etc. I haven't completely got rid of the nature of buying and selling. France's expertise in buying officials has benefited many middle classes, and Fermat is no exception. Before graduating from college, Fermat bought the positions of "lawyer" and "senator" in Beaumont de Lomagne. Fermat returned to his hometown after graduation and easily became a member of Toulouse Parliament for a term of 163 1 year. Although Fermat didn't lose his official position from entering the society to his death, and he was promoted year by year, according to records, Fermat didn't have any achievements, and his coping ability in officialdom was very general, let alone his leadership ability. However, Fermat did not interrupt his promotion. After serving as a member of the local Council for seven years, Fermat was promoted to an investigative senator and had the right to investigate and question the administrative authorities. 1642 There was an authoritative person named Boris who was an adviser to the Supreme Court. Boris recommended Fermat to the Supreme Criminal Court and the main court of Dali Palace in France, which gave Fermat a better chance of promotion in the future. 1646, Fermat was promoted as the chief speaker of the parliament and later served as the chairman of the Catholic Union. Fermat's official career has nothing outstanding to commend, but Fermat has never used his power to extort money from people, never accepted bribes, and has won people's trust and praise. Fermat's marriage made Fermat rank among the noblesse de robe, and Fermat married his cousin Louise de Rogge. Fermat is proud of his mother's noble blood, and now he just adds the symbol "Germany" before his name. Fermat has three daughters and two men. Except for Clara, the eldest daughter, all four children made Fermat feel respectable. Two daughters became priests, and the second became an assistant bishop of Fermares. Especially the eldest son, Clement samore, who not only inherited Fermat's public office and became a lawyer in 1665, but also compiled Fermat's mathematical works. If Fermat's eldest son hadn't actively published Fermat's mathematical works, it would be hard to say that Fermat could have had such a great influence on mathematics, because most of the papers were published after Fermat's eldest son died. In this sense, Samuel can also be called the heir of Fermat's career. Fermat was healthy all his life, but almost died of the plague of 1652. 1665 after the new year's day, Fermat began to feel his body changed, so he stopped playing on 65438 10/0. On the third day, Fermat died. Fermat was buried in Casterly Cemetery and later in the family cemetery in Toulouse. [Edit this paragraph] Fermat is introverted, modest and quiet, and is not good at selling himself and showing himself. Therefore, he rarely published his own works or even published a complete book. Some of his articles are always anonymous. After Fermat's death, his eldest son compiled his notes, notes and letters into a book and published a Mathematical Paper. We have long recognized the importance of timeliness to science, and even in the17th century, this problem is very prominent. Fermat's mathematical research results were not published in time and could not be disseminated and developed. It was not entirely a loss of personal reputation, but affected the pace of mathematical progress in that era. For Fermat, the real career is academic, especially mathematics. Fermat is familiar with French, Italian, Spanish, Latin and Greek, and he also has a lot of research. The erudition of language provided Fermat with language tools and convenience for his mathematical research, enabling him to learn and understand Arabic and Italian algebra and ancient Greek mathematics. Perhaps it is these that laid a good foundation for Fermat's attainments in mathematics. In mathematics, Fermat can not only roam freely in the kingdom of mathematics, but also stand outside the world of mathematics and have a bird's eye view of mathematics. This can not be absolutely attributed to his mathematical talent, but also to his erudition.