... to B; hence shadeSCHAUM'S OUTLINE OF THEORY AM) PROBLEMS OF PROBABILITY SEYMOURLIPSCHUTZ, Ph.D. Professor of MathematicsTemple University SCHAUM'S OUTLINE SERIES McGRAW-HILL New York ... for the union and intersection,respectively, of a sequence of sets. Definition: Anonempty class cA of subsets of U is called analgebra (o-algebra) of sets if: (i) the complement of any set in ... (i) The union of A and Вconsists of the elements in A or in В (or both);hence AuB = {a,b,d,e}. (ii) The intersection of A and В consists of those elements which belong toboth A and B; hence...