Ernst Sigismund Fischer
From Infogalactic: the planetary knowledge core
Lua error in package.lua at line 80: module 'strict' not found.
Ernst S. Fischer | |
---|---|
File:ErnstFischer 1920 MFO9271.jpg
ca. 1920
|
|
Born | Vienna |
12 July 1875
Died | Script error: The function "death_date_and_age" does not exist. Cologne |
Nationality | Austria |
Fields | Mathematics |
Institutions | University of Cologne |
Alma mater | University of Vienna |
Thesis | Zur Theorie der Determinanten (1899) |
Doctoral advisor | Franz Mertens Leopold Gegenbauer |
Doctoral students | Hans Falckenberg Friedrich Neuhaus |
Known for | Riesz–Fischer theorem |
Spouse | Ellis Strauss |
Children | Ursula |
Ernst Sigismund Fischer (12 July 1875 – 14 November 1954) was a mathematician born in Vienna, Austria. He worked alongside both Mertens and Minkowski at the Universities of Vienna and Zurich, respectively. He later became professor at the University of Erlangen, where he worked with Emmy Noether.
His main area of research was mathematical analysis, specifically orthonormal sequences of functions which laid groundwork for the emergence of the concept of a Hilbert space.
The Riesz–Fischer theorem in Lebesgue integration is named in his honour.
External links
- Lua error in package.lua at line 80: module 'strict' not found..
- Ernst Sigismund Fischer at the Mathematics Genealogy Project
<templatestyles src="Asbox/styles.css"></templatestyles>
<templatestyles src="Asbox/styles.css"></templatestyles>
Categories:
- Use dmy dates from October 2013
- Articles needing translation from foreign-language Wikipedias
- Pages with broken file links
- Austrian mathematicians
- Austrian expatriates in Switzerland
- Austrian expatriates in Germany
- Scientists from Vienna
- 1875 births
- 1954 deaths
- Austrian scientist stubs
- European mathematician stubs