It means that all elements in A are included in set B, but not necessarily the other way around.
If all elements of set A are also elements of set B, then set A is a subset of set B.
A set "A" is said to be a subset of of set "B", if every element in set "A" is also an element of set "B". If "A" is a subset of "B" and the sets are not equal, "A" is said to be a proper subset of "B". For example: the set of natural numbers is a subset of itself. The set of square numbers is a subset (and also a proper subset) of the set of natural numbers.
If set A and set B are two sets then A is a subset of B whose all members are also in set B.
let A be the set {1,2,3,4} let B the set {1,3} let C be the set {1,2,4,5} from this, we can say that B is a subset of a because all of the members of B are also member of in another.
A set A is a subset of a set B if A is "contained" inside B.
Set "A" is said to be a subset of set "B" if it fulfills the following two conditions:A is a subset of B, andA is not equal to B
A is a subset of a set B if every element of A is also an element of B.
Assume that set A is a subset of set B. If sets A and B are equal (they contain the same elements), then A is NOT a proper subset of B, otherwise, it is.
If all the elements in set A are also elements of set B, then set A is a subset of set B.
If set A is a subset of set B, that means that all elements in set A are also in set B. In the case of a proper subset, there is the additional specification that the two sets are not equal, i.e., there must be an element in set B that is not also an element of set A.
A proper subset B of a set A is a set all of whose elements are elements of A nad there are elements of A that are not elements of B. It follows, then, that an improper subset must be the whole set, A. That is, A is an improper subset of A
It is the set of all elements we are considering or dealing with in a given problem. We use a capital U or sometimes capital E to mean the universal set. Now take ANY two sets, A and B. If every single element of set A is contained in set B, we say A is a subset of B. The empty set is a subset of every set. Every set in contained in the universal set, so they are all subset of it.