Power Set/Examples/Empty Set
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Example of Power Set
Let $\O$ denote the empty set.
Then the power set of $\O$ is:
- $\powerset \O = \set \O$
and so has $2^0 = 1$ element.
Sources
- 1975: T.S. Blyth: Set Theory and Abstract Algebra ... (previous) ... (next): $\S 2$. Sets of sets: Exercise $2$