Mathematician:Eduard Helly

Mathematician
Austrian mathematician working mainly in topology and functional analysis.

Proved the Hahn-Banach Theorem and Banach-Steinhaus Theorem, but remained unrecognised for these at the time.

Nationality
Austrian

History

 * Born: 1 June 1884 in Vienna, Austria
 * Died: 28 November 1943 in Chicago, Illinois, USA

Theorems and Definitions

 * Helly's Selection Theorem
 * Helly's Theorem
 * Helly-Bray Theorem (with )


 * Helly Family
 * Helly Metric
 * Helly Space