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Andrei Kolmogorov, the most outstanding mathematician of the Soviet Union in the 20th century, is also one of the few most influential mathematicians in the world in the 20th century.
In 1924, when he was in the fourth year of university, he and the Soviet mathematician Xin Qin established the three-series number theorem on independent random variables. In 1928, he obtained the necessary and sufficient conditions for the sequence of random variables to obey the theorem of large numbers.
In 1931, the article "Analytical Methods of Probability Theory" was published, which laid the foundation for Markov process theory. Markov processes are widely used in disciplines such as physics, chemistry, biology, engineering technology, and economic management. One of the hotspots and key points of mathematics research in the world today. In 1933, the book "Basics of Probability Theory" was published. It was the first time in the world to establish the axioms of probability theory based on measurement theory and integral theory. This is an epoch-making masterpiece that wrote the most important mathematics in the history of science. A glorious page.
In addition to his major achievements in mathematics research, Kolmogorov is also a well-known mathematics educator. Since the 1930s, he began to guide the National Mathematical Olympiad for middle school students, personally write tutorial books and give lectures to students. Established a boarding school for physics and mathematics and trained a large number of outstanding middle school students. Most of the 67 students who directly supervised became world-class mathematicians. Among them, 14 became academicians of the former Soviet Academy of Sciences . He also served as the Soviet Academy of Sciences. The director of the Mathematics Department of the Education Committee and the director of the Mathematics Department of the Middle School Textbook Committee of the Ministry of Education, presided over the preparation of the middle school mathematics syllabus and textbooks.
What I want to share with you today is the ninth grade e-book "Preliminary Algebra and Analysis" edited by Kolmogorov
(Because the display content is limited, the following is only a part)
How to obtain "Preliminary Algebra and Analysis " Grade 9 materials?
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Scan the QR code below, follow the official account "Young Mathematician ", and reply to "Textbook " in the background chat window .
( Long press to identify the QR code and follow the young mathematician)