Mathematician:Karl Johannes Herbert Seifert

Full name: Karl Johannes Herbert Seifert. Sometimes reported as Herbert Karl Johannes Seifert.

German mathematician who worked mainly in topology and knot theory.

Collaborated extensively with William Threlfall.

One of the few who managed to weather the 2nd World War without upsetting either the Nazis or the Allies.

Not to be confused with Carl Keenan Seyfert (1911 – 1960), the American astronomer.

Nationality
German

History

 * Born: May 27, 1907 in Bernstadt, Saxony
 * Died: 1 Oct 1996 in Heidelberg, Germany

Theorems and Definitions

 * Seifert Algorithm
 * Seifert Matrix
 * Seifert Surface
 * Seifert Fiber Space
 * Seifert-van Kampen Theorem
 * Seifert Conjecture
 * Seifert-Weber Space

Books and Papers

 * 1932: Topologie 3-dimensionaler gefaserter Räume (Topology of 3-dimensional fibred spaces) (Ph.D. Dissertation)
 * 1933: Continuous vector fields
 * 1934: Lehrbuch der Topologie (Lectures on Topology) (with William Threlfall)
 * 1938: Variationsrechnung Im Grossen (Variational Calculus in the Large) (with William Threlfall)