Felix Hausdorff
German mathematician and writer
Felix Hausdorff was a German mathematician, pseudonym Paul Mongré, who is considered to be one of the founders of modern topology and who contributed significantly to set theory, descriptive set theory, measure theory, and functional analysis. Wikipedia
Born: November 8, 1868, Wrocław, Poland
Died: January 26, 1942 (age 73 years), Bonn, Germany
Education: Leipzig University
Children: Lenore König
Grandchild: Felix König
Partner: Charlotte Hausdorff