death_date nationality ethnicity field birth_date image article_title name
march 6 , 1961 estonian baltic german mathematics october 1 , 1894 edgar krahn.jpg edgar krahn
 edgar krahn
edgar krahn

edgar krahn -lrb- in laiuse parish -- 6 march 1961 -rrb- was an estonian mathematician .
krahn was born in sootaga -lrb- now laiuse , jõgeva county -rrb- , governorate of livonia , as a member of the baltic german minority .
he died in rockville , maryland , us .
krahn studied at the university of tartu and the university of göttingen .
he graduated at tartu in 1918 , received his doctoral degree at göttingen in 1926 , with richard courant as his advisor , and his habilitation took place at tartu in 1928 .
he is co-author of the rayleigh -- faber -- krahn inequality .
krahn worked in estonia , germany , the uk , and the us 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
