Mathematician:Karl Wilhelm Feuerbach

Mathematician

German geometer best known for Feuerbach's Theorem.

Introduced homogeneous coordinates in $1827$, independently of August Ferdinand Möbius.

Suffered from mental illness, probably brought on by months of imprisonment as a student for political reasons, and died a recluse.

Nationality

German

History

• Born: 30 May 1800 in Jena, Holy Roman Empire
• Died: 12 March 1834 in Erlangen, Germany

Theorems and Definitions

• Feuerbach's Theorem
• Feuerbach Circle

Results named for Karl Wilhelm Feuerbach can be found here.

Definitions of concepts named for Karl Wilhelm Feuerbach can be found here.

Publications

• 1822: Eigenschaften einiger merkwürdigen Punkte des geradlinigen Dreiecks und mehrerer durch sie bestimmten Linien und Figuren. Eine analytisch-trigonometrische Abhandlung (Properties of some special points in the plane of a triangle, and various lines and figures determined by these points: an analytic-trigonometric treatment)

• 1827: Grundriss zu analytischen Untersuchungen der dreyeckigen Pyramide (Foundations of the analytic theory of the triangular pyramid)

Sources

• John J. O'Connor and Edmund F. Robertson: "Karl Wilhelm Feuerbach": MacTutor History of Mathematics archive

• 1991: David Wells: Curious and Interesting Geometry ... (previous) ... (next): A Chronological List Of Mathematicians