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...t of the need for a better understanding of the concept of [[infinity]]. [[Georg Cantor]] (1845–1918), "the father of set theory", used it to demonstrate for the

...t of the need for a better understanding of the concept of [[infinity]]. [[Georg Cantor]] (1845–1918), "the father of set theory", used it to demonstrate for the

...tence of transcendental numbers, the proof being subsequently displaced by Georg Cantor (1873). [[Charles Hermite]] (1873) first proved that [[E (mathematical cons ...having defined them cleanly. The first rigorous definition was given by [[Georg Cantor]] in 1871. In 1874 he showed that the set of all real numbers is [[uncounta

[[Georg Cantor]] gave examples of [[subset]]s of the real line with unusual properties —

* [[Georg Cantor]] worked as a professor at the university of Halle.

A famous letter from [[Georg Cantor|Cantor]] to [[Richard Dedekind|Dedekind]] in 1899 pointed out that the noti

...e largely superseded by vectors). [[Octonion]]s were discovered in 1843. [[Georg Cantor]], through its naive [[set theory]], formally defined the notion of [[infin

in the work of [[Georg Cantor]].

...the subject. [[Set theory]] originated in the study of the infinite by [[Georg Cantor]], and it has been the source of many of the most challenging and important