KELDYSH 152 



clays, and a new method of regenerating air (which was used on 



an industrial scale). 



Bibliography: 



Structure of inorganic peroxides. Zhur. Fiz. Khim., 1940, 



14, #3. 



and S. I. Raikhchtein. Higher oxides of potassium (Inorganic 



Peroxides. 11). Zhur. Fiz. Khim., 1947, 21, #3. 



and G. P. Nikol'skii, T. A. Abletsova. New oxide of potassi- 



um. Doklady Akad. Nauk., New Series, 1949, 64, #1. 

 and others . Kinetics of spontaneous decay of the ozonide of 

 potassium. Doklady Akad. Nauk, 1956, 108 , #4. 

 and others. Isotope exchange of oxygen between a free hy- 

 droxyl radical and water. Zhur. Fiz. Khim. 1956, 30, #6. 

 Office: L. Karpov Physico-Chemical Institute 



Moscow, USSR 



KELDYSH, MSTISLAV VSEVOLDQVICH (Mathematician and 

 Specialist in Mechanics ) 



M. V. Keldysh was born February 10, 1911 in Riga (now in 

 Latvian S.S.R.). He is the son of Vsevolod Mikhaylovich Keldysh 

 (1878, a specialist on ferro-concrete construction and a pro- 

 fessor). In 1931 he graduated from Moscow University. Join- 

 ing the N. Ye. Zhukovskii Central Aero-Hydrodynamics Institute 

 (TsAGI), Keldysh worked during 1934-35 in its Department of 

 Flutter Engineering and in 1943 and in 1945 was a department 

 chief in the Institute. In 1939 he became associated with the 

 V. A. Steklov Mathematics Institute of the U.S.S.R. Academy of 

 Sciences and in 1954 was made Director of that institute's De- 

 partment of Applied Mathematics. 



He has been a member of the Communist Party of the Soviet 

 Union since 1949. In 1943 he was elected a Corresponding 

 Member of the U.S.S.R. Academy of Sciences and in 1946 an 

 Academician. He was named academician- secretary of the 

 Academy's Department of Physico- Mathematical Sciences in 

 1953, has served on the Academy's Presidium since 1953, and 

 in 1960 was elected one of the vice presidents. In 1961 Keldysh 

 replaced A. N. Nesmeyanov as President of the U.S.S.R. Acade- 

 my of Sciences. 



In 1957 Keldysh was named to membership on the Presidium 

 of the newly formed U.S.S.R. National Committee on Theoreti- 

 cal and Applied Mechanics, U.S.S.R. Academy of Sciences. The 

 following year he was cited as a member of the organization 

 committee of the All- Union Conference on Theoretical and Ap- 

 plied Mechanics, and when that conference convened in Moscow 



