LYUSTERNIK 228 



for a turbo-compression air fed engine and the expediency of 

 using this engine as a power plant for a high-performance jet 

 plane. In 1937-39 Lyul'ka designed the first Soviet experi- 

 mental turbo- compression jet aviation engine. In postwar 

 years, powerful, contemporary turbojet engines AL-3, AL-5 

 were built under the leadership of Lyul'ka. He has been work- 

 ing on a series of basic engineering problems such as the ana- 

 lytic dependence of the degeneration of a turbojet engine on the 

 speed of flight as in its transfer into a ramjet. 

 Office: USSR Academy of Sciences 



Leninskii Prospekt, 14 



Moscow, USSR 



LYUSTERNIK, LAZAR ARQNOVICH (Mathematician) 



L. A. Lyusternik was born December 31, 1899 in Zdunska 

 Wola, Poland. He graduated from Moscow University in 1922 

 and received the degree of Doctor of Physical-Mathematics in 

 1935. In 1931, he became a professor at Moscow University. 

 He was awarded a Stalin Prize in 1946, and was made a Corre- 

 sponding Member of the U.S.S.R. Academy of Sciences in 1946. 

 LyusterrJk utilized topological methods for calculus of vari- 

 ations "in the whole." In i924, he applied the method of finite 

 differences to the solution on the problem of Dirichlet. He 

 proved, together with L. G. Shnirelman, the theorem of three 

 geodesies. He also works in the area of functional analysis, 

 differential equations, and computing mathematics. 

 Bibliography: 



Problem of Dirichlet. Uspekhi Mat. Nauk, 1940, #8. 

 Topology of functional spaces and calculus of variations in the 

 whole. Works of the Mathematical Institute of V. A. Steklov, 

 1947, 19. 

 Biography: 



Thirty Years of Mathematics in the U.S.S.R. 1917-1947. 

 Moscow-Leningrad: 1948 (Collection of articles under 

 editorship of A. G. Kurosh et al .) 



A. N. Kolmogorov. Lazar Aronovich Lyusternik (50th Anni- 

 versary since the date of birth). Uspekhi Mat. Nauk, 1950, 

 5, #1. 

 Office: Mathematics Department 



Moscow University 

 Moscow, USSR 

 Residence: ul. Chkalova 14/16 



Moscow, USSR 

 Telephone: K7 50 75 



