Introduction from Baidu:

(leonhard euler AD1707-1783)1the best mathematician in the 8th century and one of the greatest mathematicians in history.

1707 was born in Basel, Switzerland. When I was a child, I liked mathematics very much. After 10, I began to teach myself algebra. Even several of his teachers haven't read the book, but little Euler read it with relish. When he meets something he doesn't understand, he marks it with a pen and then asks others for advice afterwards. /kloc-When he was 0/3 years old, he went to university of basel to study, which was a miracle at that time and once caused a sensation in mathematics. Little Euler is the youngest student in this university and even in the whole Swiss university campus. In college, I got the careful guidance of johann bernoulli (1667- 1748), the most famous mathematician in calculus at that time, and gradually established a deep friendship with him. Johann bernoulli later praised shine on you as better than the students in Lanzhou: "I was a child when I introduced advanced analysis, and you brought him up." Two years later, in the summer, Euler received a bachelor's degree from university of basel, and the following year, Euler received a master's degree in philosophy from university of basel. 1725, Euler began his mathematics career.

Euler's father Paul Euler is also a mathematician. He wants little Euler to study theology and teach him a little math at the same time. Because of his talent and extremely diligent spirit, he got johann bernoulli's appreciation and special guidance. When he was 19 years old, he wrote a paper on the mast and won an award from the Paris Academy of Sciences. His father no longer opposed him to study mathematics.

Johann bernoulli's son daniel bernoulli went to Russia on 1725 and recommended Euler to czar Cadling I. In this way, Euler came to Petersburg on 17 and 1733. At the age of 26, Euler became a professor of mathematics at the Academy of Sciences in Petersburg. 1735, Euler solved a problem. It took several famous mathematicians several months to solve this problem, but Euler finished it in three days with his own invented method. However, due to overwork, he got an eye disease and unfortunately lost his right eye. At this time, he was only 28 years old. At the invitation of Prussian frederick the great, Euler went to Berlin as the director of the Institute of Physics and Mathematics of the Chinese Academy of Sciences until 1768. Later, at the sincere urging of Tsar Cadling II, he returned to Petersburg. Unexpectedly, not long after, his left eye vision decreased and he was completely blind. Unfortunately, the fire in Petersburg in 177 1 affected Euler's residence. 64-year-old Euler was blinded by illness and was trapped in the fire. Although he was saved from the fire by others, his research and a lot of research results were reduced to ashes.

The heavy blow still didn't knock Euler down. He vowed to recover the loss. Before he was completely blind, he could still see vaguely. He seized this last moment, scribbled down the formula he found on a big blackboard, and then dictated its contents, which were recorded by his students, especially his eldest son A. Euler (mathematician and physicist). After Euler was completely blind, he still struggled with the darkness with amazing perseverance and studied it with memory and mental arithmetic.

1On September 8, 783, Euler, who had just calculated the law of balloon rising not long ago, suddenly stopped breathing with excitement at the age of 76. The three countries where Euler lived and worked: Switzerland, Russia and Germany all regarded Euler as their mathematicians and were proud of him.

Euler's memory and mental arithmetic are rare. He can retell the contents of his notes when he was young. Mental arithmetic is not limited to simple operations, and advanced mathematics can also be done by heart. An example is enough to illustrate his skill. Two students of Euler added the term 17 of a complex convergence series to the 50th place, and the difference between them was one unit. In order to determine who is right, Euler calculated all the errors in his mind and finally put them into the errors. It also solved Newton's headache-the problem of starting from the moon and many complicated analysis problems.

Euler has a high style. Lagrange is a great mathematician after Euler. Since the age of 19, he has been communicating with Euler to discuss the general solution of isoperimetric problems, from which the variational method was born. The isoperimetric problem is a problem that Euler has painstakingly considered for many years. Lagrange's solution won warm praise from Euler. 1February 2, 759, Euler praised Lagrange's achievements in his reply. He modestly suppressed his immature works in this respect from being published for the time being, so that the works of young Lagrange could be published and circulated, and won great reputation. In his later years, all mathematicians in Europe regarded him as a teacher. The famous mathematician Laplace once said, "Euler is our mentor." Euler's energy was maintained until the last moment, in the afternoon of September 1783. In order to celebrate his successful calculation of the law of balloon rising, Euler invited friends to dinner. Soon after Uranus was discovered, Euler wrote the essentials of calculating Uranus' orbit and made fun of his grandson. After drinking tea, he suddenly fell ill, and his pipe fell out of his hand, muttering "I'm dead". Finally, Euler "stopped living and calculating".

Euler's profound knowledge, endless creative energy and unprecedented rich works are amazing! He published papers from the age of 19 until he was 76, and wrote a lot of books and papers for more than half a century. It can be said that Euler is the most prolific outstanding mathematician in the history of science. According to statistics, in his tireless life, * * * wrote 886 books and papers, among which analysis, algebra and number theory accounted for 40%, and geometry accounted for 18%. Today, Euler's name can be seen in almost every field of mathematics, from Euler line of elementary geometry, euler theorem of polyhedron, Euler transformation formula of solid analytic geometry, Euler solution of quartic equation to Euler function in number theory, Euler equation of differential equation, Euler constant of series theory, Euler equation of variational method, Euler formula of complex variable function and so on. And the number is countless. His contribution to mathematical analysis is unique, and the book Introduction to Infinitesimal Analysis is more convenient.

The amazing productivity of Euler's works is not accidental. He can work in any harsh environment. He often holds his children on his knees to finish his papers, regardless of their noise. His indomitable perseverance and tireless academic spirit made him blind, and he didn't stop studying mathematics. During the 17 years after his blindness, he also dictated several books and about 400 papers. Gauss (1777- 1855), a great mathematician in the 9th century, once said, "Studying Euler's works is always the best way to understand mathematics."

Euler's life is a life of struggle for the development of mathematics. His outstanding wisdom, tenacious perseverance, tireless spirit of struggle and noble scientific ethics are always worth learning. Euler has made brilliant achievements in mathematics, physics, astronomy, architecture, music and philosophy. Formulas, theorems and important constants named after Europe can often be seen in various fields of mathematics. Common textbooks are π( 1736), i( 1777), e( 1748), sin and cos( 1748), tg( 1753) and△ X (. Goldbach conjecture was also put forward in his correspondence with Goldbach. Ole also completed the precise theory of the moon's motion around the earth for the first time, founded the mechanics disciplines such as analytical mechanics and rigid body mechanics, and deepened the design and calculation theory of telescopes and microscopes.

Euler can achieve great things in his life because of his amazing memory; Concentrate and never be disturbed by noise and murmur; Take your time and be tireless.