What Greek mathematician who spend most of his professional life in Germany lends his name to the Vitali–Carathéodory theorem?
Constantin Carathéodory Constantin Carathéodory (Greek: Κωνσταντίνος Καραθεοδωρή "Konstantinos Karatheodori"; 13 September 1873 – 2 February 1950) was a Greek mathematician who spent most of his professional career in Germany. He made significant contributions to the theory of functions of a real variable, the calculus of variations, and measure theory. His work also includes important results in conformal representations and in the theory of boundary correspondence. In 1909, Carathéodory pioneered the "Axiomatic Formulation of Thermodynamics" along a purely geometrical approach.
Nicole El Karoui Nicole El Karoui is a French-Tunisian mathematician, and pioneer in the development of mathematical finance, born May 29, 1944, in Paris (maiden name "Nicole Schvartz"). She is considered to be one of the very active mathematicians that started heavily promoting financial mathematics in France and trained many engineers and scientists to this field.