Cantor's theorem facts for kids
In set theory Cantor's theorem states that the set which contains all subsets of a set has a greater cardinality than the set itself. Georg Cantor showed this in an article he published in 1890. The theorem is valid both for finite and infinite sets.
See also
In Spanish: Teorema de Cantor para niños
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Cantor's theorem Facts for Kids. Kiddle Encyclopedia.