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Matematik Dili.pdf

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Cardinality Bir A kümesinin cardinatilty si o A kümesinineleman sayısıdır. |A| olarak gösterilir Örnekler:If A = {1, 2, 3} then |A| = 3If B = {x | x is a natural number and 1< x< 9}then |B| = 9 Sonsuz (Infinite) cardinality Sayılabilir (Countable) (örnek, natural numbers,integers) Sayılamayan (Uncountable) (örnek, real numbers)If S = {1,2,3} |S| = 3.If S = {3,3,3,3,3} |S| = 1.If S = ∅ |S| = 0.If S = { ∅, {∅}, {∅,{∅}} } |S| = 3.If S = {0,1,2,3,…}, |S| is infinite.more onthis later3

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