| Leopold Vietoris | |
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Leopold Vietoris on his 110th birthday
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| Born | 4 June 1891 Bad Radkersburg, Styria Austria-Hungary |
| Died | 9 April 2002 (aged 110 years, 309 days) Innsbruck, Tyrol Austria |
| Nationality | Austrian |
| Fields | Mathematics |
| Institutions | University of Innsbruck |
| Alma mater | University of Vienna |
| Doctoral advisor | Gustav Ritter von Escherich Wilhelm Wirtinger |
| Doctoral students | Eva Ambach Walter Dürk Helmut Grömer Kurt Hellmich Hiltrud Jochum Johann Leicht Fortunat Pescolderung Martha Petschacher Gerhard Riege |
| Known for | Contributions to topology Being a supercentenarian |
| Spouse | Klara Riccabona (m. 1928-1935) (her death) Maria Josefa Vincentia Vietoris, born von Riccabona zu Reichenfels (m. 1936–2002) (her death) |
Leopold Vietoris (German: [fiːˈtoːʀɪs], English: /viːəˈtɔərɪs/; 1891–2002) was an Austrian mathematician and a World War I veteran who gained additional fame by becoming a supercentenarian (unusual especially for a male). 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. Vietoris attended the University of Vienna, where he earned his Ph.D in 1920.[1]
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He studied mathematics and geometry at the Technical University in Vienna.[1] Vietoris was drafted in 1914 in World War I and was wounded in September that same year.[1] On 4 November 1918, one week pre signing The Treaty of Versailles, he became an Italian prisoner of war.[1] In autumn 1928, he married his first wife Klara Riccabona, who later died while giving birth to their sixth daughter.[1] In 1936, he married Klara's sister, Maria Riccabona.[1]
With his wife Maria Josefa Vincentia, born von Riccabona zu Reichenfels (18 July 1901 – 24 March 2002), dying at age 100, they became one of the eldest couples of the world, having the seventh-highest aggregate age of a married couple (total combined age). Their combined age at the end of their marriage, 211 years and 177 days, is the highest on record. Vietoris died two weeks after her death.
Vietoris is survived by his six daughters, 17 grandchildren, and 30 great-grandchildren.[2]
He lends his name to a few mathematical concepts:
Vietoris lived to be 110 years and 309 days old, and became the oldest verified Austrian man ever.