Otto Blumenthal

German mathematician (1876-1944).

Born July 20th, 1876 in Frankfurt am Main.

Died November 13th, 1944 at 68 years old in Theresienstadt concentration camp.

Occupations
mathematician, university teacher
Wikipedia

The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins? Edgar Allan Poe