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Intro2805 - SETS Set = A collection of objects E = cfw_0 2...

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SETS Set = A collection of objects E = {0, 2, 4,…} P = {2, 3, 5, 7,…} A = {A, B, C, D, . . ., Z} Two sets are same if their elements are the same. A = {1,2,3} B = {2,1,3} A B: If each element of A is in B. A B: if A B and A B. A B, A B, A – B.
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SOME SPECIAL SETS : Natural Numbers : Integers : Rational Numbers : Real Numbers .
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P ROPERTIES : S ET O PERATIONS Let A, B, and C be sets. Idempotency A A = A A A =A Commutativity A B = B A A B = B A Associativity A (B C ) = (A B) C A (B C ) = (A B) C Distributivity (A B) C = (A C) (B C) (A B) C = (A C) (B C)
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