The concept of a "closed set" can refer to different contexts depending on the field of study, such as mathematics or computer science, but in general terms, it typically means that an operation applied to members of the set results in a member that is still within the set.
In the context of mathematics, particularly in set theory and abstract algebra, a set is said to be closed under a certain operation (like addition, subtraction, multiplication, or division) if performing that operation on any elements of the set yields results that are also in the set.
For example, the set of natural numbers (0, 1, 2, 3, ...) is closed under addition because adding any two natural numbers results in another natural number. However, it is not closed under subtraction because subtracting a larger natural number from a smaller one can yield a negative number, which is not in the set of natural numbers.
Therefore, the correct interpretation from your statements is:
- An operation performed on members of that set will result in a member of the same set.
This describes closure accurately in the context of a mathematical operation performed on the elements of a set.