Power Set/Examples/Arbitrary Example 1

Example of Power Set

Let $A = \set {1, 2}$.

Then:

$\powerset A = \set {\O, \set 1, \set 2, \set {1, 2} }$

Sources

• 1979: John E. Hopcroft and Jeffrey D. Ullman: Introduction to Automata Theory, Languages, and Computation ... (previous) ... (next): Chapter $1$: Preliminaries: $1.4$ Set Notation: Example $1.2$