Question

what is a null set ?​

Answer 1

Answer:

In mathematical analysis, a null set is a set that can be covered by a countable union of intervals of arbitrarily small total length. The notion of null set in set theory anticipates the development of Lebesgue measure since a null set necessarily has measure zero.

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Answer 2

Answer:

In mathematical sets, the null set, also called the empty set, is the set that does not contain anything.

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