Isidor Natanson

Isidor Pavlovich Natanson (Russian: Исидор Павлович Натансон; February 8, 1906 in Zurich July 3, 1964 in Leningrad) was a Swiss-born Soviet mathematician known for contributions to real analysis and constructive function theory, in particular, for his textbooks on these subjects. His son, Garal'd Natanson (19302003), was also a known mathematician.