Let \( X \) be a nonempty set and * be a binary operation on \( P(X... VIDEO
Let \( X \) be a nonempty set and * be a binary operation on \( P(X) \), the power set of \( X \). defined bv \( A * B=A \cap B \) for all \( A, B \in P(X) \).
\( \mathrm{P} \) Show that \( X \) is the only invertible element in \( P(X) \).
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