- Edgar Krahn
Edgar Krahn (
October 1 ,1894 –March 6 ,1961 ) was an Estonianmathematician . [Ü. Lumiste, J. Peetre (eds.), "Edgar Krahn 1894 – 1961", IOS Press, 1994, ISBN 90-5199-168-1]Krahn was born in Sootage, district
Laiuse ,Estonia , as a member of the Baltic German minority. He died in Rockville,Maryland , USA.Krahn studied at the
University of Tartu and theUniversity of Göttingen .He graduated at Tartu in 1918, received hisdoctoral degree at Göttingen in 1926, withRichard Courant as his advisor [MathGenealogy |id=59050] , and hishabilitation took place at Tartu in 1928.He is co-author of the
Rayleigh-Faber-Krahn inequality [http://eom.springer.de/r/r130040.htm Rayleigh-Faber-Krahn inequality] .Krahn worked in Estonia,
Germany , the UK, and the USA in the following areas of pure and applied mathematics:*
Differential geometry
*Differential equations
* "Bausparmathematik", which is distantly related to insurance mathematics
*Probability theory
*Gas dynamics
*Elasticity theory References
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