- #1

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## Homework Statement

P(P(∅))

## Homework Equations

## The Attempt at a Solution

I did the inner power set first: {{∅}, ∅}

Then I took the power set of that: {{{∅}}, {∅}, {{∅}, ∅}, ∅}

But according to the answer, there is only two elements.

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- Thread starter Bashyboy
- Start date

- #1

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P(P(∅))

I did the inner power set first: {{∅}, ∅}

Then I took the power set of that: {{{∅}}, {∅}, {{∅}, ∅}, ∅}

But according to the answer, there is only two elements.

- #2

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is {∅} an element of ∅??

What are all the elements of ∅?

What are all the subsets of ∅?

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