Image of Eduard Helly

Eduard Helly

died 79 years ago

28 November 1943

Helly worked on functional analysis and proved the Hahn-Banach theorem in 1912 fifteen years before Hahn published essentially the same proof and 20 years before Banach gave his new setting.

Find out more at: https://mathshistory.st-andrews.ac.uk/Biographies/Helly/