 A. Markov, his doctoral degree from St. Petersburg University.During 1900–1908 he was a student and then a docent at St. Petersburg University.In 1911–1915 he was a senior lecturer and then professor at the Imperial University of Warsaw, in 1915–1918 a professor at the Imperial University of Warsaw in Rostov-on-Don, and from 1918 a professor of probability and mathematical statistics at what is now called the National University of Uzbekistan (in Tashkent).