Question: What Greek mathematician who spend most of his professional life in Germany lends his name to the Vitali–Carathéodory theorem?
Sentence (from "Vitali–Carathéodory theorem"): In mathematics, the Vitali–Carathéodory theorem is a result in real analysis that shows that, under the conditions stated below, integrable functions can be approximated in L from above and below by lower- and upper-semicontinuous functions, respectively.
Relevant evidence: No