# Leopold Vietoris Information (Person)

*https://en.wikipedia.org/wiki/Leopold_Vietoris*

Leopold Vietoris | |
---|---|

Born | |

Died | (aged 110 years, 309 days) | 9 April 2002

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.

## Biography

Vietoris studied mathematics and geometry at the
Vienna University of Technology.^{
[1]}
He was drafted in 1914 in
World War I and was wounded in September that same year.^{
[1]} On 4 November 1918, one week before the
Armistice of Villa Giusti, he became an
Italian
prisoner of war.^{
[1]} After returning to Austria, he attended the
University of Vienna, where he earned his
Ph.D. in 1920, with a thesis written under the supervision of
Gustav von Escherich and
Wilhelm 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 topology**(see topological space)**Vietoris homology**(see homology theory)**Mayer–Vietoris sequence****Vietoris–Begle mapping theorem****Vietoris–Rips complex**

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]}

## Decorations and awards

- Austrian Decoration for Science and Art (1973)
- Grand Gold Decoration for Services to the Republic of Austria (1981)
- Honorary member of the German Mathematical Society (1992)

## Notes

- ^
^{a}^{b}^{c}^{d}^{e}^{f}Reitberger, Heinrich (November 2002). "Leopold Vietoris (1891–2002)" (PDF). American Mathematical Society. Retrieved 5 September 2003. **^**Leopold Vietoris at the Mathematics Genealogy Project**^**"Professor Dr. Leopold Vietoris" (PDF). Geo Imagining. Retrieved 11 October 2009.**^**Reitberger, Heinrich (November 2002). "Leopold Vietoris (1891–2002)" (PDF).*Notices of the American Mathematical Society*.**49**(10): 1235.**^**"Verified Supercentenarians (Ranked By Age) Gerontology Research Group". 1 January 2014. Retrieved 28 February 2019.

## References

- Weibel, Peter, ed. (2005).
*Beyond Art: A Third Culture: A Comparative Study in Cultures, Art and Science in 20th Century Austria and Hungary*. Springer Science & Business Media. p. 260. ISBN 978-3-211-24562-0.

## External links

- 1891 births
- 2002 deaths
- People from Bad Radkersburg
- 20th-century Austrian mathematicians
- Topologists
- Men supercentenarians
- Austrian centenarians
- Members of the Austrian Academy of Sciences
- Recipients of the Austrian Decoration for Science and Art
- Recipients of the Grand Decoration for Services to the Republic of Austria
- Austro-Hungarian military personnel of World War I
- Austrian prisoners of war
- World War I prisoners of war held by Italy
- Austro-Hungarian mathematicians