When1: 1885
Who: Georg Cantor [Cantor, Georg]
What: mathematician
Where: Halle, Germany
works\ Contributions to the Founding of the Theory of Transfinite Numbers [1885]
Detail: He lived 1845 to 1918 and studied set theory, infinity, continuity, transfinite numbers, union, intersection, conjunction, disjunction, bound, extension principle, abstraction principle, and one-to-one correspondence.
He invented continuum hypothesis. Cardinal-number series and ordinal-number series are infinite. Irrational numbers in closed intervals are rational-number-series limits. Sets of limits can have sets of limits, and so on, to infinity.
Geometrical-figure or space topologies are points related by distance functions or limits. For any real number n, 2^n > n.
Mathematical Sciences>Mathematics>History>Set Theory
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Date Modified: 2022.0224