This article (or one that was redirected to it) was nominated for deletion on 25 August 2016. The result of the discussion was keep.
This article (or one that was redirected to it) was nominated for deletion on 16 January 2024. The result of the discussion was keep.
Cantor was German, the three articles mentioned are in German.
Über eine elementare Frage der Mannigfaltigkeitslehre. Jahresbericht der Deutschen Mathematiker-Vereinigung, Vol I, pp 75ff. The problem with the proof is that is not formalized (and therefore probably easier to understand). A formalized proof was only given in 1910.
Über eine Eigenschaft des Inbegriffes aller reellen algebraischen Zahlen. Journal für die Reine und Angewandte Mathematik Vol 77, pp. 258–262.