In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set.
Any set other than the empty set is called non-empty.
In some textbooks and popularizations, the empty... meer
Deze site maakt gebruik van cookies. Voor meer informatie volgt u deze link.
Hierop is meer te lezen over welke cookies wij plaatsen en waarom en welke mogelijke '3rd-party' cookies er bij kunnen komen.