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.
It is a set that is well defined.
It is the set of "everything".
An empty set is this { } It's just a set with nothing in it.
Any subset.
by numbers
figure it out
In math, a collection of items is called a set.
math
in math, domain is the set of possible inputs to a function while range is the set of possible outputs.
It is a set that contains no elements - an empty set.