Leopold Vietoris | |
|---|---|
 Vietoris on his 110th birthday in 2001 | |
| Born | (1891-06-04)4 June 1891 |
| Died | (2002-04-09)9 April 2002 (aged 110 years, 309 days) |
| Alma mater | TU Wien University of Vienna |
| Known for | Contributions totopology Being asupercentenarian |
| Spouse(s) | |
| Children | 6 |
| Scientific career | |
| Fields | Mathematics |
| Institutions | University of Innsbruck |
| Doctoral advisors | Gustav Ritter von Escherich Wilhelm Wirtinger |
Leopold Vietoris (/viːˈtɔːrɪs/vee-TOR-iss,German:[ˈleːopɔltviːˈtoːʁɪs],Austrian German:[ˈleːopɔldviːˈtoːrɪs]; 4 June 1891 – 9 April 2002) was anAustrianmathematician,World War I veteran andsupercentenarian. He was born inRadkersburg and died inInnsbruck.
He was known for his contributions totopology—notably theMayer–Vietoris sequence—and other fields ofmathematics, his interest inmathematical history, and for being a keenalpinist.
Vietoris studied mathematics and geometry at theVienna University of Technology.[1]He was drafted in 1914 inWorld War I and was wounded in September that same year.[1] On 4 November 1918, one week before theArmistice of Villa Giusti, he became anItalianprisoner of war.[1] After returning to Austria, he attended theUniversity of Vienna, where he earned hisPhD in 1920, with a thesis written under the supervision ofGustav von Escherich andWilhelm Wirtinger.[1][2]
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]
Vietoris was survived by his six daughters, 17 grandchildren, and 30 great-grandchildren.[3]
He lends his name to a few mathematical concepts:
Vietoris remained scientifically active in his later years, even writing one paper on trigonometric sums at the age of 103.[4]
Vietoris lived to be 110 years and 309 days old, and became the oldest verified Austrian man ever.[5]
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