- Born 22 December 1899, Vienna, Austria
- Died 18 July 1992, Fort Lauderdale FL
- attended City College, New York 1925–1926
- MA Columbia University 1927
- PhD February 1944, New York University
- Adviser: Richard Courant
- Dissertation: The solution of the differential equation . . . by Hadamard’s method
- Primary employer: Brooklyn College