Leopold Vietoris

Leopold Vietoris
Leopold Vietoris on his 110th birthday
Born	(1891-06-04)4 June 1891 Bad Radkersburg, Styria Austria-Hungary
Died	(2002-04-09)9 April 2002 (aged 110 years, 309 days) Innsbruck, Tyrol Austria
Nationality	Austrian
Alma mater	TU Wien University of Vienna
Known for	Contributions to topology Being a supercentenarian
Spouse(s)	Klara Riccabona (m. 1928–1935) (her death) Maria Josefa Vincentia Vietoris, born von Riccabona zu Reichenfels (m. 1936–2002) (her death)
Children	6
Scientific career
Fields	Mathematics
Institutions	University of Innsbruck
Doctoral advisors	Gustav Ritter von Escherich Wilhelm Wirtinger

Leopold Vietoris (/viːˈtɔːrɪs/; German: [viːˈtoːʀɪs]; 4 June 1891 – 9 April 2002) was an Austrian mathematician, World War I veteran and supercentenarian. He was born in Radkersburg and died in Innsbruck.

He was known for his contributions to topology—notably the Mayer–Vietoris sequence—and other fields of mathematics, his interest in mathematical history, and for being a keen alpinist.