55 BOGOLYUBOV 



thus eliminating porosity of aluminum alloys, and to work out 

 new principles of casting, ensuring significant metal reduction. 

 Bochvar wrote a series of textbooks on metallography and the 

 thermal treatment of metallic alloys. 

 Bibliography: 



A Study of the Mechanism and Kinetics of Crystallization of 



Eutectic Alloys. Moscow -Leningrad: 1935. 



Basic Treatment of Alloys, 5th ed. Moscow-Leningrad: 



1940. 



Metallography, 5th ed. Moscow: 1956. 



On various mechanisms of plasticity in metallic alloys. 



Izvest. Akad. Nauk S.S.S.R., Otdel. Tekh. Nauk, 1948, #5. 

 Office: Moscow Institute of Non- Ferrous Metals and Gold 



Moscow, USSR 



BOGOLYUBOV, NIKOLAI NIKQLAEVICH (Mathematician) 



N. N. Bogolyubov was born in 1900 in Nizhnii Novgorod (now 

 Gorkii) and in 1922, he moved with his mother to Kiev, where he 

 attracted the attention of mathematicians D. A. Grave and N. M. 

 Krilov. In 1923 he began work in a seminar sponsored by the 

 department of mathematical physics of the Academy of Sciences 

 of the Ukrainian S.S.R. under the direction of N. M. Krilov. In 

 1924, he wrote his first scientific paper. In 1925, by special 

 permission, he was admitted with no diploma from a higher 

 educational institution as an associate of the department of 

 mathematical physics of the Academy of Sciences of the Ukraini- 

 an S.S.R. In 1928, he defended his candidate's dissertation on 

 the subject "The Use of Direct Methods in the Calculus of Vari- 

 ations for Investigation of Irregular Cases of the Problem of 

 the Extreme." In 1930, the Presidium of the Academy of 

 Sciences of the Ukrainian S.S.R. awarded him the degree Doctor 

 of Mathematics honoris causa. 



Starting in 1928, Bogolyubov was employed by the Academy 

 of Sciences of the Ukrainian S.S.R. In 1936, he became chair- 

 man of a department, first at Kiev University, and in 1959 at 

 Moscow University. From 1946 to 1949, he was Dean of the 

 Mechanics and Mathematics Division of Kiev University; he 

 was chairman of a number of departments of the Academy of 

 Sciences U. S.S.R. (Department of Nonlinear Mechanics of the 

 Institute of Structural Mechanics, Department of Mathematical 

 Physics of the Institute of Mathematics). Since 1956, he has 

 been in charge of the Department of Theoretical Physics of the 

 Mathematics Institute imeni V. A. Steklov of the Academy of 

 Sciences U. S.S.R., as well as of the Laboratory of Theoretical 



