Question

what is an empty set​

Answer 1

Answer:

In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. ... Many possible properties of sets are vacuously true for the empty set. In some textbooks and popularizations, the empty set is referred to as the "null set".

Answer 2

Explanation:

mathematics, the empty set is the unique set having no elements; its size or cardinality is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theorie