[分析] 關於cardinality證明
小弟想問如何證明自然數集的cardinality確實不等於實數集的cardinality
兩集合A,B的cardinality相等 等價於 找到一函數f使得f:A->B是bijection的關係
但是小弟不知道如何下手,
請大大指教XD
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09/23 10:38, , 1F
09/23 10:38, 1F
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