Ernst Sigismund Fischer (original) (raw)
Ernst Sigismund Fischer (Viena, 12 de juliol de 1875 - Colònia, 14 de novembre de 1954) va ser un matemàtic austríac que va fer la seva carrera docent a Alemanya.
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| dbo:abstract | Ernst Sigismund Fischer (Viena, 12 de juliol de 1875 - Colònia, 14 de novembre de 1954) va ser un matemàtic austríac que va fer la seva carrera docent a Alemanya. (ca) Ernst Sigismund Fischer (* 12. Juli 1875 in Wien; † 14. November 1954 in Köln) war ein österreichischer Mathematiker, der sich mit Analysis und Algebra beschäftigte. (de) 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. He is the grandson of composer Karl Graedener. (en) Ernst Sigismund Fischer, né le 12 juillet 1875 à Vienne et mort le 14 novembre 1954 à Cologne, est un mathématicien autrichien qui a travaillé à la fois en analyse et en algèbre. (fr) Ernst Sigismund Fischer (Vienna, 12 luglio 1875 – Colonia, 14 novembre 1954) è stato un matematico austriaco, che lavorò a fianco di Franz Mertens e Hermann Minkowski alle università di Vienna e Zurigo. Divento successivamente professore all'università di Erlangen, dove collaborò con Emmy Noether. La sua area di ricerca era l'analisi matematica, dove si interessò delle successioni ortonormali di funzioni, argomento che diede le basi alla teoria degli spazi di Hilbert. Dimostrò nel 1907, indipendentemente da Frigyes Riesz, il teorema di Riesz-Fischer, che ancora porta il suo nome. (it) Ernst Sigismund Fischer (Wenen, 12 juli 1875 - Keulen, 14 november 1954) was een in Oostenrijk geboren Duitse wiskundige. Hij werkte aan de Universiteit van Wenen samen met Franz Mertens en aan de Universiteit Zürich met Hermann Minkowski. In 1910 werd hij aan de Universiteit van Erlangen de opvolger van Paul Gordan. In de invariantentheorie zat hij op de lijn van David Hilbert. In de jaren direct na 1910 werkte hij nauw samen met Emmy Noether. Zijn voornaamste terrein van onderzoek was de wiskundige analyse, met name van functies, die de basis hebben gelegd voor het ontstaan van het concept van een Hilbertruimte. De stelling van Riesz-Fischer in de Lebesgue-integratie is naar hem vernoemd (nl) |
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| dbo:deathDate | 1954-11-14 (xsd:date) |
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| dbp:birthDate | 1875-07-12 (xsd:date) |
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| dbp:caption | ca. 1920 (en) |
| dbp:children | Ursula (en) |
| dbp:deathDate | 1954-11-14 (xsd:date) |
| dbp:deathPlace | dbr:Cologne |
| dbp:doctoralAdvisor | dbr:Franz_Mertens dbr:Leopold_Gegenbauer |
| dbp:fields | Mathematics (en) |
| dbp:knownFor | dbr:Riesz–Fischer_theorem dbr:Fischer's_inequality |
| dbp:name | Ernst S. Fischer (en) |
| dbp:nationality | dbr:Austria |
| dbp:spouse | Ellis Strauss (en) |
| dbp:thesisTitle | Zur Theorie der Determinanten (en) |
| dbp:thesisYear | 1899 (xsd:integer) |
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| rdfs:comment | Ernst Sigismund Fischer (Viena, 12 de juliol de 1875 - Colònia, 14 de novembre de 1954) va ser un matemàtic austríac que va fer la seva carrera docent a Alemanya. (ca) Ernst Sigismund Fischer (* 12. Juli 1875 in Wien; † 14. November 1954 in Köln) war ein österreichischer Mathematiker, der sich mit Analysis und Algebra beschäftigte. (de) 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. He is the grandson of composer Karl Graedener. (en) Ernst Sigismund Fischer, né le 12 juillet 1875 à Vienne et mort le 14 novembre 1954 à Cologne, est un mathématicien autrichien qui a travaillé à la fois en analyse et en algèbre. (fr) Ernst Sigismund Fischer (Vienna, 12 luglio 1875 – Colonia, 14 novembre 1954) è stato un matematico austriaco, che lavorò a fianco di Franz Mertens e Hermann Minkowski alle università di Vienna e Zurigo. Divento successivamente professore all'università di Erlangen, dove collaborò con Emmy Noether. La sua area di ricerca era l'analisi matematica, dove si interessò delle successioni ortonormali di funzioni, argomento che diede le basi alla teoria degli spazi di Hilbert. Dimostrò nel 1907, indipendentemente da Frigyes Riesz, il teorema di Riesz-Fischer, che ancora porta il suo nome. (it) Ernst Sigismund Fischer (Wenen, 12 juli 1875 - Keulen, 14 november 1954) was een in Oostenrijk geboren Duitse wiskundige. Hij werkte aan de Universiteit van Wenen samen met Franz Mertens en aan de Universiteit Zürich met Hermann Minkowski. In 1910 werd hij aan de Universiteit van Erlangen de opvolger van Paul Gordan. In de invariantentheorie zat hij op de lijn van David Hilbert. In de jaren direct na 1910 werkte hij nauw samen met Emmy Noether. De stelling van Riesz-Fischer in de Lebesgue-integratie is naar hem vernoemd (nl) |
| rdfs:label | Ernst Sigismund Fischer (ca) Ernst Sigismund Fischer (de) Ernst Sigismund Fischer (en) Ernst Sigismund Fischer (it) Ernst Sigismund Fischer (fr) Ernst Sigismund Fischer (nl) |
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