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Frigyes Riesz. Frigyes Riesz [ˈfriɟɛʃ ri:s] (Vorname auch dt. Friedrich oder frz. Frédéric, * 22. Januar 1880 in Győr; † 28. Februar 1956 in Budapest) war ein ungarischer Mathematiker, der wesentliche Beiträge zur Funktionalanalysis geleistet hat.
Frigyes Riesz (Hungarian: Riesz Frigyes, pronounced [ˈriːs ˈfriɟɛʃ], sometimes spelled as Frederic; 22 January 1880 – 28 February 1956) was a Hungarian mathematician who made fundamental contributions to functional analysis, as did his younger brother Marcel Riesz.
Frigyes Riesz (born Jan. 22, 1880, Györ, Austria-Hungary [now in Hungary]—died Feb. 28, 1956, Budapest, Hungary) was a Hungarian mathematician and pioneer of functional analysis, which has found important applications to mathematical physics.
- The Editors of Encyclopaedia Britannica
28. Feb. 2012 · Riesz introduced the idea of the 'weak convergence' of a sequence of functions ( f_ {n} (x) f n(x) ). A satisfactory theory of series of orthonormal functions only became possible after the invention of the Lebesgue integral and this theory was largely the work of Riesz.
1. Okt. 2014 · In 1906, Frigyes Riesz introduced a preliminary version of the notion of a topological space. He called it a mathematical continuum.
- Laura Rodríguez
- Laura.Rodriguez@verw.hs-fulda.de
- 2015
Lipót Fejer was born only three weeks after Frigyes Riesz (on 9 February 1880; Riesz was born on 22 January). There was constant teasing between them. For instance, Fejer would claim that he actually was older than Riesz, because Riesz was born a month prematurely. Riesz loved a quiet, balanced life. He liked order. He was jovial, even a bit ...
Frigyes Riesz at MathSciNet (for those with access). Riesz, F., Sur certains systemes d'equations fonctionelles et l'approximation des fonctions continues , Comptes Rendus Acad. Sci. Paris 150 (1910), 647-677.
