Math Problem Statement

What is the power set of P(pie) of the empty set

Solution

The power set P(A)P(A) of a set AA is the set of all subsets of AA, including the empty set and AA itself.

Now, let's go through the process for the empty set:

  1. Let the empty set be denoted as \emptyset, which is a set containing no elements.
  2. The power set of \emptyset is the set of all subsets of \emptyset.
  3. The only subset of the empty set is the empty set itself.

Therefore, the power set of the empty set is:

P()={}P(\emptyset) = \{ \emptyset \}

So, the power set of the empty set contains one element, which is the empty set.

Do you want further details or have any questions?

Here are 5 questions to expand on this concept:

  1. What is the power set of a set with one element, such as A={a}A = \{a\}?
  2. How many elements does the power set of a set with nn elements contain?
  3. What is the relationship between the cardinality of a set and its power set?
  4. Can a power set itself be empty? Why or why not?
  5. How would you compute the power set of A={1,2}A = \{1, 2\}?

Tip: The power set of a set with nn elements always contains 2n2^n subsets.

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Math Problem Analysis

Mathematical Concepts

Set Theory
Power Sets
Empty Set

Formulas

P(A) = {subsets of A}
Power set of a set with n elements contains 2^n subsets

Theorems

Basic properties of power sets
Cardinality of power sets

Suitable Grade Level

Grades 9-12