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Let P be the set of all subsets of a giv...

Let P be the set of all subsets of a given set X. Show that `uu:" "P" "xx" "P->P` given by `(A ," "B) ->Auu B` and ` nn:" "PxxP ->P` given by `(A ," "B)->AnnB` are binary operations on the set P.

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