You must redo your posting!
Read it again. It is impossible for A to equal P(A).
What is B? What does /\ mean?
How Can I Prove That :
1 - A Is a Subset Or Equal To P(A)
2- P(A/\B) = P(A) /\ P(B)
WHRE A AND B ARE SETS
/\ IS INTERSECTION
Thanks FOR THE HELP IN ADVANCE