Johannes Tropfke (14 Oktober 1866 – 10 November 1939) was a German mathematician and teacher, who is best remembered for his influential work on the history of mathematics Geschichte der Elementarmathematik, which consists of seven volumes.
Author: photographer not mentioned in any source Source: Journal "Deutsche Mathematik", Vol.6, Issue 1 (10 Sep 1941), p.114; included in an obituary "Johannes Tropfke (14. X. 1866 bis 10. XI. 1939)" by Jos. E Hofmann (p.114-118) License:
More Details