MENSHOV 240 



Office: Astronomical Observatory of USSR Academy of 



Sciences 

 Pulkovo, USSR 



MENSHOV, DMITRII EVGENEVICH (Mathematician) 



D. E. Menshov was born in Moscow April 18, 1892. He 

 graduated from Moscow University in 1916 and in 1935 he re- 

 ceived the Doctor of Physical-Mathematical Sciences degree. 

 He was made professor in 1928 at Moscow University where he 

 had taught since 1922. In 1953 he was elected a Corresponding 

 Member of the U.S.S.R. Academy of Sciences. He was awarded 

 a Stalin Prize in 1951. 



Menshov' s main work is in orthogonal functions and trigono- 

 metric series. He obtained a basic result in the uniqueness of 

 representing functions by trigonometric series (1916), and gave 

 a complete solution to the problem of representation of 

 functions by trigonometric series (1940). Menshov is also the 

 author of an important work on the theory of analytical functions. 

 Bibliography: 

 Biography: 



N. K. Bari and L. A. Lusternik. Dmitrii Evgenevich 

 Menshov (60th Anniversary since the date of birth). Uspekhi 

 Mat. Nauk, 1952, 7, #3. 

 Office: Mathematics Department 



Moscow University 

 Moscow, USSR 



MERGELYAN, SERGEI NIKITOVICH (Mathematician) 



S. N. Mergelyan was born May 19, 1928 in Simferopol. He 

 graduated from Yerevan University in 1947, and received the 

 degree of Doctor of Physical-Mathematical Sciences in 1949. 

 From 1949 to 1956, he was employed at Yerevan University, 

 and since 1945, at the Mathematics Institute of the Armenian 

 Academy of Sciences. In 1953, he became a professor at Mos- 

 cow University. He was made an Academician of the Armenian 

 S.S.R. Academy of Sciences in 1956, and was elected to the 

 U.S.S.R. Academy of Sciences as a Corresponding Member in 

 1953. He received a Stalin Prize in 1952. 



Mergelyan worked on the theory of the best approximation of 

 functions of a complex variable by polynomials. 



As of 1961, Mergelyan was Director of the Scientific Re- 

 search Institute of Mathematical Computers and a member of 

 the Presidium of the Armenian S.S.R. Academy of Sciences. 

 Sciences. 



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