Question: (i) Show that the class A* (= ) defined in Exercise 15 contains the class defined by = {B ( (; either B

(i) Show that the class A* (= Ā) defined in Exercise 15 contains the class Ĉ defined by Ĉ = {B ( (; either B = ! for some A ( A, or B ( N for some N ( A with μ (N) = 0}.
(That is Ĉ is taken from A by supplementing A with all subsets of all null sets in A; that is, sets of measure 0.)
(ii) Also, show that σ(Ĉ) def  = A* (= Ā).

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