Category:Ernst Sigismund Fischer

**Ernst Sigismund Fischer**
	Austrian mathematician
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Date of birth	12 July 1875; Vienna
Date of death	14 November 1954; Cologne
Country of citizenship	Austria;
Educated at	University of Vienna (1894–1899); University of Göttingen; University of Zurich;
Doctoral advisor	Franz Mertens; Leopold Gegenbauer;
Doctoral student	Friedrich Wilhelm Neuhaus; Hans Falckenberg; Otto Polensky; Adelheid Rottländer; Martin Piel;
Occupation	mathematician; university teacher;
Employer	University of Cologne (1920–1938); University of Erlangen–Nuremberg (1911–1920); Brno University of Technology (1902–1910);
Work location	Cologne;
Notable work	Riesz–Fischer theorem;
Authority file
	Q85268; ISNI: 000000000978181X; VIAF ID: 35211170; GND ID: 116551402; IdRef ID: 161244815; Nationale Thesaurus voor Auteursnamen ID: 260563668; Mathematics Genealogy Project ID: 49499
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