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ANDREI NIKOLAEVICH KOLMOGOROV (on the occasion of his seventieth birthday)

On 25 April 1973 the famous Soviet mathematician, Andrei Nikolaevich Kolmogorov, celebrated his seventieth birthday. It would be difficult to point to any significant branch of mathematics, with the exception of number theory, in which he did not make a substantial contribution. However, his creative interests went, and continue to go, far beyond the limits of mathematics proper. Indeed, among his papers one can find analyses of problems in mechanics, geology, biology, the crystallization of metals, ballistics, prosody, methodology, and the history of science. His interest in the problems of teaching and its organization is unfailing. Speaking of just his pedagogical activities, Andrei Nikolaevich was especially successful in training young mathematicians by means of his individual influence: the number of Kolmogorov's research students who have obtained their Ph.D. exceeds sixty. And every one of his students has preserved forever the memory of his outstanding teacher, of his ability to arouse interest in actual scientific problems, to find for each one of the young scholars important problems not beyond their powers. A substantial transformation of the very character of university education is connected with his name, in particular, the organization of practical work in mathematics, the introduction of the reading course "Analysis 3", a survey of academic plans and programmes with the aim of making the contents of mathematical education correspond to the present state of mathematics and to the needs of the country for knowledge and for able mathematicians. The last decade in the history of our secondary schools is closely connected with his name, with his search for new content of mathematical education in schools and his new form-faculty courses on mathematics, the founding and development of mathematical boarding schools, his cycle of lectures for teachers on the structure of modern mathematics, etc.