Karl Hessenberg

Karl Adolf Hessenberg (September 8, 1904 – February 22, 1959) was a German mathematician and engineer. The Hessenberg matrix form is named after him.

Hessenberg was also the brother of composer Kurt Hessenberg, and the great-grandson of doctor and author Heinrich Hoffmann.

Gerhard Hessenberg, who is a near relative and another mathematician, has the Hessenberg sum and product of ordinals are named after him.