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Há 1 dia · Os seus trabalhos nessa área se iniciaram em conjunto com o matemático alemão Richard Dedekind. Os dois inicialmente concordavam na definição de conjuntos infinitos, mas Cantor percebeu algo revolucionário à época: os conjuntos infinitos não são todos do mesmo tamanho, existem infinitos maiores do que outros [4].
Há 4 dias · Richard Dedekind, c. 1870. Since 1856, Dedekind had developed theories involving infinitely many infinite sets—for example: ideals, which he used in algebraic number theory, and Dedekind cuts, which he used to construct the real numbers.
Há 4 dias · In 1876, Richard Dedekind replaced Kummer's undefined concept by concrete sets of numbers, sets that he called ideals, in the third edition of Dirichlet's book Vorlesungen über Zahlentheorie, to which Dedekind had added many supplements.
Há 1 dia · Beginning with Richard Dedekind in 1858, several mathematicians worked on the definition of the real numbers, including Hermann Hankel, Charles Méray, and Eduard Heine, leading to the publication in 1872 of two independent definitions of real numbers, one by Dedekind, as Dedekind cuts, and the other one by Georg Cantor, as equivalence classes ...
Há 4 dias · Richard Feynman (born May 11, 1918, New York, New York, U.S.—died February 15, 1988, Los Angeles, California) was an American theoretical physicist who was widely regarded as the most brilliant, influential, and iconoclastic figure in his field in the post-World War II era.
Há 2 dias · Nürnberg. Johannisfriedhof – Theodor von Cramer-Klett (im Familiengrab der Cramer-Klett), Albrecht Dürer, Anselm Feuerbach, Willibald Pirckheimer, Hans Sachs (genaue Grabstelle unbekannt), Johannes Scharrer, Rudolf Schiestl, Veit Stoß, William Wilson. Rochusfriedhof – Johann Pachelbel, Peter Vischer d. Ä.
Há 3 dias · Dezember – Wikipedia. 30. Dezember. Der 30. Dezember ist der 364. Tag des gregorianischen Kalenders (der 365. in Schaltjahren) und somit der vorletzte Tag des Jahres. Historische Jahrestage November · Dezember · Januar. 1.
