An empty set is this { }
It's just a set with nothing in it.
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An empty set in math is called a null set.
The null set is a set which has no members. It is an empty set.
Yes,an empty set is the subset of every set. The subset of an empty set is only an empty set itself.
The empty set is a set that has no elements.
The only subset of an empty set is the empty set itself.