# 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.*