Sa'di Hasanovich Sirajiddinov
1920-1988
Sa'di Hasanovich Sirajiddinov (October 5, 1920, Kokand – April 29, 1988, Tashkent) — mathematician and public figure, Academician of the Academy of Sciences of Uzbekistan (1966), Honored Scientist of Uzbekistan (1971), Doctor of Physical and Mathematical Sciences (1953), Professor (1956). He graduated from Central Asian University (1942). Senior Research Fellow at Moscow University (1953–56). Professor at Central Asian University (from 1956). Department Head from 1958. Director of the Institute of Mathematics of the Academy of Sciences of Uzbekistan (1957–67), Rector of Tashkent State University (1966–70; 1983–87), Vice President of the Academy of Sciences of Uzbekistan (1970–1983). His scientific works are devoted to important properties of multivariable classical polynomials. S.'s research in the field of generalization of limit theorems for Markov chains and asymptotic expansions in the 1950s led to the further advancement of the Tashkent mathematical school. S. applied achievements in probability theory to mathematical statistics. In the 1960s, S. and his students solved important problems concerning limit theorems for sums of independent random variables and random vectors forming Markov chains; their research on uniform estimates related to these problems has great applied significance. S. also conducted extensive research in queuing theory, various fields of statistics, stationary process theory, and other areas. S.'s contributions to studying the scientific heritage of Central Asian thinkers and training highly qualified mathematical specialists for Central Asia, especially Uzbekistan, are significant. S. also made definite contributions to organizing a school for young mathematicians and conducting the Republican Young Mathematicians Olympiad. S. was a full member of the Bernoulli International Society for Mathematical Statistics and Probability Theory (Netherlands) (1966). Laureate of the Beruni State Prize of Uzbekistan (1973), awarded the Order "For Great Services" (2002).