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Cantor's first set theory article contains Georg Cantor's first theorems of transfinite set theory, which studies infinite sets and their properties. One of these theorems is his "revolutionary discovery" that the set of all real numbers is uncountably, rather than countably, infinite. This theorem is proved using Cantor's first uncountability proof, which differs from the more familiar proof using his diagonal argument. The title of the article, "On a Property of the Collection of All Real Algebraic Numbers" ("Ueber eine Eigenschaft des Inbegriffes aller reellen algebraischen Zahlen"), refers to its first theorem: the set of real algebraic numbers is countable. Cantor's article was published in 1874. In 1879, he modified his uncountability proof by using the topological notion of a set be

Attributes	Values
rdfs:label	Cantors erster Überabzählbarkeitsbeweis (de) Cantor's first set theory article (en) Cantors eerste overaftelbaarheidsbewijs (nl)
rdfs:comment	Cantors erster Überabzählbarkeitsbeweis ist Georg Cantors erster Beweis, dass die reellen Zahlen eine überabzählbare Menge bilden. Er kommt ohne das Dezimalsystem oder irgendein anderes Zahlensystem aus. Die Behauptung und der erste Beweis wurden von Cantor im Dezember 1873 entdeckt, und 1874 in Crelles Journal (Journal für die Reine und Angewandte Mathematik, Bd. 77, 1874) veröffentlicht. Viel bekannter wurde sein 1877 gefundener zweiter Beweis dafür, Cantors zweites Diagonalargument. (de) Cantors eerste overaftelbaarheidsbewijs toont aan dat de verzameling van alle reële getallen overaftelbaar is. Dit bewijs verschilt van het meer bekende bewijs, waarin Cantor zijn diagonaalargument gebruikt. Het eerste overaftelbaarheidsbewijs van Cantor werd in 1874 gepubliceerd, in een artikel dat ook een bewijs bevat dat de verzameling van de reële algebraïsche getallen aftelbaar is en een bewijs van het bestaan van transcendente getallen. (nl) Cantor's first set theory article contains Georg Cantor's first theorems of transfinite set theory, which studies infinite sets and their properties. One of these theorems is his "revolutionary discovery" that the set of all real numbers is uncountably, rather than countably, infinite. This theorem is proved using Cantor's first uncountability proof, which differs from the more familiar proof using his diagonal argument. The title of the article, "On a Property of the Collection of All Real Algebraic Numbers" ("Ueber eine Eigenschaft des Inbegriffes aller reellen algebraischen Zahlen"), refers to its first theorem: the set of real algebraic numbers is countable. Cantor's article was published in 1874. In 1879, he modified his uncountability proof by using the topological notion of a set be (en)
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dcterms:subject	Set theory Real analysis History of mathematics Georg Cantor
Wikipage page ID	22697171 (xsd:integer)
Wikipage revision ID	1117927524 (xsd:integer)
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