# power set and super set.

By | September 11, 2023

Although, the power set and super set are related concepts in set theory, they have difference in terms of meanings and purposes.

1. Power Set:
The power set of a set is the set of all possible subsets of that set, including the empty set and the set itself. In other words, power set is the collection of all possible combinations of elements from the original set.

For example, let’s consider a set A = {1, 2}. The power set of A, denoted as P(A), would be:
P(A) = { {}, {1}, {2}, {1, 2} }

Here, the power set P(A) contains four subsets: the empty set {}, the subsets {1} and {2} containing one element each, and the subset {1, 2} containing both elements of the original set.

Certainly! Let’s consider a set C = {a, b, c}. We can find the power set of C by listing all possible subsets of C, including the empty set and the set itself.

The elements of set C are {a, b, c}. Now, we can construct the power set P(C):

P(C) = { {}, {a}, {b}, {c}, {a, b}, {a, c}, {b, c}, {a, b, c} }

In this case, the power set P(C) contains eight subsets:

• The empty set {}
• Subsets containing a single element: {a}, {b}, {c}
• Subsets containing two elements: {a, b}, {a, c}, {b, c}
• The subset containing all three elements: {a, b, c}

So, the power set of set C contains a total of eight subsets, including the empty set and the set itself.

1. Superset:
A superset is a set that contains all the elements of another set, and it may have additional elements as well. In other words, if set B is a superset of set A, then all the elements of A are also present in B.
READ:  Interior, Exterior and Boundary of a set.

Let’s look at some examples of super set.

Example 1:
consider set A = {1, 2} and set B = {1, 2, 3}. Here, set B is a superset of set A because all the elements of A (1 and 2) are also present in B. In addition, B contains an extra element, 3.

Example 2:
Given any two sets:
A = {1, 2, 3}
B = {1, 2, 3, 4, 5}

In this case, set B is a superset of set A because B contains all the elements of A (1, 2, and 3), and it also has additional elements (4 and 5). In other words, every element of set A is also an element of set B.

Example 3:
Consider the following sets:
C = {apple, banana, orange}
D = {apple, banana, orange, peach, pear}

In this instance, set D is a superset of set C because D contains all the elements of C (apple, banana, and orange), along with the additional elements (peach and pear). Set C is a subset of set D because all the elements of C are also elements of D.

Example 4:
Looking at sets below with numbers:
E = {2, 4, 6, 8}
F = {2, 4, 6, 8}

In this case, both sets E and F look alike. Each set is a superset and subset of the other because they have exactly the same elements.

In the context of Mathematics, the concept of supersets and subsets is basis to set theory and has applications in various areas, including logic, algebra, and analysis. It helps define relationships between sets, establish containment, and analyze set operations.

In conclusion, the power set is the set of all possible subsets of a given set, including the empty set and the set itself. On the other hand, a superset is a set that contains all the elements of another set, and it may have additional elements as well.