What Greek mathematician who spend most of his professional life in Germany lends his name to the Vitali–Carathéodory theorem?
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. It is named after Giuseppe Vitali and Constantin Carathéodory.
Vitold Shmulyan Vitold Lvovich Shmulyan (Russian: Витольд Львович Шмульян , August 29, 1914 – August 27 1944), was a Soviet mathematician known for his work in functional analysis. The Eberlein–Šmulian theorem is named after him.